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Wiki source code of 3.4 Protections

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1 (% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
2 = Settings =
3
4 (% data-numbered-headings-start="4" style="--numbered-headings-start: 3;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
5 == Protections ==
6
7 The BMS Mini device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
8
9 (% class="box errormessage" %)
10 (((
11 **Attention!**
12 Behavior of contactors at different errors is configured in **corresponding contactor settings**!
13 )))
14
15 === Overcurrent ===
16
17 The BMS Mini device performs the overcurrent protection depending on current sensor values.
18
19 To change the overcurrent protection of the battery, select the "Protections → Overcurrent" section:
20
21 [[image:1733748033234-868.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
22
23 In this section:
24
25 * Enable – a flag to enable the protection;
26 * Maximum charging current, А;
27 * Tolerant charging current, А;
28 * Maximum discharging current, А;
29 * Tolerant discharging current, А;
30 * Delay before setting the error, millisecond;
31 * Delay before clearing the error, second;
32 * Lock – a flag to block the error until the device is restarted.
33
34 As a result of operation of the overcurrent protection, the "Overcurrent" error is generated.
35
36 Error generation conditions:
37
38 * the current is positive (charging), and its modulo value is greater than the “Maximum charging current” value for the “Delay before setting the error” time;
39 * the current is negative (discharging), and its modulo value is greater than the “Maximum discharging current” value for the “Delay before setting the error” time.
40
41 Conditions for removing the error:
42
43 * the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
44 * the current is negative (discharging), and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
45
46 === Charge current limit ===
47
48 The BMS Mini device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Mini S.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
49
50 Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
51
52 To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
53
54 [[image:1740571132019-848.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="143" width="800"]]
55
56 In this section:
57
58 * Enable – a flag to enable the protection;
59 * Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
60 * Region 1: Current difference – a value of maximum absolute current difference, A;
61 * Region 2: Current difference – a value of maximum relative current excess, A;
62 * Delay before setting the error, millisecond;
63 * Delay before clearing the error, second;
64 * Lock – a flag to block the error until the device is restarted.
65
66 === Discharge current limit ===
67
68 The BMS Mini device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Mini S.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
69
70 Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
71
72 To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
73
74 [[image:1740571296344-411.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="151" width="800"]]
75
76 In this section:
77
78 * Enable – a flag to enable the protection;
79 * Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
80 * Region 1: Current difference – a value of maximum absolute current difference, A;
81 * Region 2: Current difference – a value of maximum relative current excess, A;
82 * Delay before setting the error, millisecond;
83 * Delay before clearing the error, second;
84 * Lock – a flag to block the error until the device is restarted.
85
86 === Undervoltage ===
87
88 The BMS Mini device implements battery protection from too low voltage on the cells.
89
90 To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
91
92 [[image:1740571345293-460.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
93
94 In this section:
95
96 * Enable – a flag to enable the protection;
97 * Minimum cell voltage, V;
98 * Tolerant cell voltage, V;
99 * Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
100 * Delay before setting the error, millisecond;
101 * Delay before clearing the error, second;
102 * Lock – a flag to block the error until the device is restarted.
103
104 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
105
106 Error generation conditions:
107
108 * the minimum voltage among all cells of the battery is less than the “Minimum cell voltage” value for the “Delay before setting the error” time.
109
110 Conditions for removing the error:
111
112 * the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
113
114 === Overvoltage ===
115
116 The BMS Mini device implements battery protection from too high voltage on the cells.
117
118 To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
119
120 [[image:1740571383842-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="147" width="800"]]
121
122 In this section:
123
124 * Enable – a flag to enable the protection;
125 * Maximum cell voltage, V;
126 * Tolerant cell voltage, V;
127 * Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
128 * Delay before setting the error, millisecond;
129 * Delay before clearing the error, second;
130 * Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
131 * Lock – a flag to block the error until the device is restarted.
132
133 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
134
135 Error generation conditions:
136
137 * the maximum voltage among all cells of the battery is greater than the “Maximum cell voltage” value for the “Delay before setting the error” time.
138
139 Conditions for removing the error:
140
141 * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
142
143 === Low temperature ===
144
145 The BMS Mini device implements battery protection from too low temperature.
146
147 To change the battery protection parameters from low temperature, select the "Protections → Low temperature" section:
148
149 [[image:1733748045675-570.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="137" width="800"]]
150
151 In this section:
152
153 * Enable – a flag to enable the protection;
154 * Minimum charge temperature, °C;
155 * Tolerant charge temperature, °C;
156 * Minimum discharge temperature, °C;
157 * Tolerant discharge temperature, °C;
158 * Delay before setting the error, millisecond;
159 * Delay before clearing the error, second;
160 * Lock – a flag to block the error until the device is restarted.
161
162 As a result of the operation of the battery protection from low temperature, the "Low temperature (CH)" and/or “Low temperature (DCH)” error are generated.
163
164 Error generation conditions:
165
166 * the minimum temperature among all cells of the battery is less than the “Minimum charging (discharging) temperature” value for the “Delay before setting the error” time.
167
168 Conditions for removing the error:
169
170 * the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
171
172 === High temperature ===
173
174 The BMS Mini device implements battery protection from too high temperature.
175
176 To change the battery protection parameters from high temperature, select the "Protections → High temperature" section:
177
178 [[image:1733748045683-426.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
179
180 In this section:
181
182 * Enable – a flag to enable the protection;
183 * Maximum charge temperature, °C;
184 * Tolerant charge temperature, °C;
185 * Maximum discharge temperature, °C;
186 * Tolerant discharge temperature, °C;
187 * Delay before setting the error, millisecond;
188 * Delay before clearing the error, second;
189 * Lock – a flag to block the error until the device is restarted.
190
191 As a result of the operation of the battery protection from high temperature, the "High temperature (CH)" or “High temperature (DCH)” error is generated.
192
193 Error generation conditions:
194
195 * the maximum temperature among all cells of the battery is greater than the “Maximum charging (discharging) temperature” value for the “Delay before setting the error” time.
196
197 Conditions for removing the error:
198
199 * the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
200
201 === Battery cover ===
202
203 To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
204
205 [[image:1733748045685-763.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="92" width="800"]]
206
207 In this section:
208
209 * Enable – a flag to enable the protection;
210 * Delay before setting the error, millisecond;
211 * Delay before clearing the error, second;
212 * Lock – a flag to block the error until the device is restarted.
213
214 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
215
216 Error generation conditions:
217
218 * there is a signal from the battery cover during the “Delay before setting the error” time.
219
220 Conditions for removing the error:
221
222 * no signal from the battery cover during the “Delay before clearing the error” time.
223
224 (% class="box warningmessage" %)
225 (((
226 If there is the "Battery cover error", the **“Critical error” **is generated.
227 )))
228
229 === Cell monitor offline ===
230
231 The BMS Mini device checks if there is connection with cell monitor and set an error if not.
232
233 To change the cell monitor offline protection parameters, select the "Protections → Cell monitor offline" section:
234
235 [[image:1733748045686-719.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="93" width="800"]]
236
237 In this section:
238
239 * Enable – a flag to enable the protection;
240 * Lock – a flag to block the error until the device is restarted.
241
242 As a result of the operation of the protection from the cell monitor offline, the "Cell monitor offline error" is generated.
243
244 Error generation conditions:
245
246 * there is not connection with the cell monitor.
247
248 Conditions for removing the error:
249
250 * connection with the cell monitor is established.
251
252 (% class="box warningmessage" %)
253 (((
254 If there is the " Cell monitor offline error", the **“Critical error” **is generated.
255 )))
256
257 === Cell count ===
258
259 To change the protection parameters from the mismatch of the number of cells to the set value, select the "Protections → Cell count" section:
260
261 [[image:1733748057078-555.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
262
263 In this section:
264
265 * Enable – a flag to enable the protection;
266 * Number of cells – a number of cells connected to the BMS;
267 * Delay before setting the error, millisecond;
268 * Delay before clearing the error, second;
269 * Lock – a flag to block the error until the device is restarted.
270
271 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
272
273 Error generation conditions:
274
275 * the number of cells connected to the BMS is **not equal** to the “Number of cells” value during the “Delay before setting the error” time.
276
277 Conditions for removing the error:
278
279 * the number of cells connected to the BMS is **equal** to the “Number of cells” value during the “Delay before clearing the error” time.
280
281 (% class="box warningmessage" %)
282 (((
283 If there is the "Cell count error", the **“Critical error” **is generated.
284 )))
285
286 === Short circuit ===
287
288 The BMS Mini device implements a protection of power circuits (contactors, power wires) against overheating caused by the flow of high current for a long time.
289
290 To change the protection parameters from short circuit, select the "Protections → Short circuit" section:
291
292 [[image:1733748057080-806.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="213" width="800"]]
293
294 In this section:
295
296 * Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
297 ** Enable – a flag to enable the protection;
298 ** Maximum current, A;
299 ** Delay before setting the error, second;
300 * Switch off the charging contactor on error – a flag to open the charging contactor when the "Short circuit" error occurs;
301 * Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Short circuit" error occurs;
302 * Delay before clearing the error, second;
303 * Lock – a flag to block the error until the device is restarted.
304
305 If there is a short circuit, the "Short circuit" error is generated.
306
307 Error generation conditions:
308
309 * at any of the three protection levels, the current modulo is greater than the “Maximum current” value during the “Delay before setting the error” time.
310
311 Conditions for removing the error:
312
313 * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
314
315 === High contactor temperature ===
316
317 The BMS Mini device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X6 connector is used.
318
319 To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
320
321 [[image:1733748057082-234.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="183" width="800"]]
322
323 In this section:
324
325 * Enable – a flag to enable the protection;
326 * Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
327 * Maximum contactor temperature, °C;
328 * Tolerant contactor temperature, °C;
329 * Delay before setting the error, second;
330 * Switch off the charging contactor on error – a flag to open the charging contactor when the "High contactor temperature" error occurs;
331 * Switch off the discharging contactor on error – a flag to open the discharging contactor when the "High contactor temperature" error occurs;
332 * Delay before clearing the error, second;
333 * Lock – a flag to block the error until the device is restarted.
334
335 If there is a contactor overheat, the "High contactor temperature" error is generated.
336
337 Error generation conditions:
338
339 * the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
340
341 Conditions for removing the error:
342
343 * the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
344
345 If there is the "High contactor temperature" error, the **charging **contactor opens (the “Switch off the charging contactor on error” flag is set) and the **discharging **contactor opens (the “Switch off the discharging contactor on error” flag is set).
346
347 === Current sensor ===
348
349 The BMS Mini device checks the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
350
351 To change the test parameters of the current sensor connection circuits, select the "Protections → Current sensor" section:
352
353 [[image:1733748057083-985.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="139" width="800"]]
354
355 In this section:
356
357 * Enable – a flag to enable the protection;
358 * Maximum voltage, V;
359 * Minimum voltage, V;
360 * Voltage hysteresis – a hysteresis value to clear the error, V;
361 * Delay before setting the error, second;
362 * Delay before clearing the error, second;
363 * Lock – a flag to block the error until the device is restarted.
364
365 If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
366
367 Error generation conditions:
368
369 * the voltage in the signal line or zero level line of the current sensor is greater than the “Maximum voltage” value during the “Delay before setting the error” time;
370 * the voltage in the signal line or zero level line of the current sensor is less than the “Minimum voltage” value during the “Delay before setting the error” time.
371
372 Conditions for removing the error:
373
374 * the voltage in the signal line or zero level line of the current sensor is in range from (Minimum voltage + Voltage hysteresis) to (Maximum voltage - Voltage hysteresis) during the “Delay before clearing the error” time.
375
376 (% class="box warningmessage" %)
377 (((
378 If there is the “Current sensor error”, the **“Critical error” **is generated.
379 )))
380
381 === Charge contactor cycles ===
382
383 The BMS Mini device protects the charging contactor against frequent switching.
384
385 To change the protection parameters against high frequency switching of the charging contactor, select the "Protections → Charge contactor cycles" section:
386
387 [[image:1733748068419-377.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="140" width="800"]]
388
389 In this section:
390
391 * Enable – a flag to enable the protection;
392 * Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
393 * Check time – a time in which the BMS counts switchings of the charging contactor, second;
394 * Delay before setting the error, millisecond;
395 * Delay before clearing the error, second;
396 * Lock – a flag to block the error until the device is restarted.
397 * Number of cycles – a number of the charging contactor switchings made during battery operation.
398
399 If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
400
401 Error generation conditions:
402
403 * the number of switchings of the charging contactor for the “Check time” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
404
405 Conditions for removing the error:
406
407 * the “Delay before clearing the error” time has passed since the error was generated.
408
409 === Discharge contactor cycles protection ===
410
411 The BMS Mini device protects the discharging contactor against frequent switching.
412
413 To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
414
415 [[image:1733748068420-615.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="139" width="800"]]
416
417 In this section:
418
419 * Enable – a flag to enable the protection;
420 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
421 * Check time – a time in which the BMS counts switchings of the charging contactor, second;
422 * Delay before setting the error, millisecond;
423 * Delay before clearing the error, second;
424 * Lock – a flag to block the error until the device is restarted.
425 * Number of cycles – a number of the charging contactor switchings made during battery operation.
426
427 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
428
429 Error generation conditions:
430
431 * the number of switchings of the discharging contactor for the “Check time” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
432
433 Conditions for removing the error:
434
435 * the “Delay before clearing the error” time has passed since the error was generated.
436
437 === Temperature sensors ===
438
439 The BMS Mini device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
440
441 To change the protection parameters of the temperature sensors circuits, select the "Protections → Temperature sensors" section:
442
443 [[image:1733748068421-819.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="115" width="800"]]
444
445 In this section:
446
447 * Enable – a flag to enable the protection;
448 * Delay before setting the error, millisecond;
449 * Delay before clearing the error, second;
450 * Lock – a flag to block the error until the device is restarted.
451
452 If there are no temperature sensors connected to the BMS Mini or any temperature sensor is shorted, the "No temp. sensors" error and "Temp. sensor is shorted" error are generated respectively. These errors generated and removed with the “Delay before setting the error” and “Delay before clearing the error” delays.
453
454 (% class="box warningmessage" %)
455 (((
456 If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated.
457 )))
458
459 === WDT reset ===
460
461 If the BMS firmware hangs, the watchdog timer resets the device. The BMS can detect that the device was reset and generates the “WDT reset” error.
462
463 To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
464
465 [[image:1733748068422-188.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
466
467 In this section:
468
469 * Enable – a flag to enable the protection;
470 * Delay before clearing the error, second;
471 * Lock – a flag to block the error until the device is restarted.
472
473 Conditions for removing the error:
474
475 * the “Delay before clearing the error” time has passed from the device startup.
476
477 (% class="box warningmessage" %)
478 (((
479 If there is the "WDT reset" error, the **“Critical error” **is generated.
480 )))
481
482 === Unallowable charging ===
483
484 The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging contactor to prevent unallowable battery operation.
485
486 To change the parameters of the unallowable charging protection, select the "Protections → Unallowable charging" section:
487
488 [[image:1733748083466-209.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
489
490 In this section:
491
492 * Enable – a flag to enable the protection;
493 * Delay before setting the error, second;
494 * Delay before clearing the error, second;
495 * Lock – a flag to block the error until the device is restarted.
496
497 If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
498
499 Error generation conditions:
500
501 * the charging contactor is open and the battery current is not zero during the “Delay before setting the error” time.
502
503 Conditions for removing the error:
504
505 * the battery current is zero during the “Delay before clearing the error” time.
506
507 === Stuck contactor ===
508
509 The BMS Mini device protects contactors against sticking.
510
511 To change the protection parameters against sticking, select the "Protections → Stuck contactor" section:
512
513 [[image:1733748083467-352.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
514
515 In this section:
516
517 * Enable – a flag to enable the protection;
518 * Delay before setting the error, millisecond;
519 * Delay before clearing the error, second;
520 * Lock – a flag to block the error until the device is restarted.
521
522 If there is a stuck contactor, the “Stuck contactor” error is generated. Error generation conditions:
523
524 * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
525
526 === Contactor feedback ===
527
528 The BMS Mini device can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, the feedback signal must be connected to corresponding contactor feedback pin on X1 header.
529
530 To change the contactor feedback check parameters, select the "Protections → Contactor feedback" section:
531
532 [[image:1733748083468-378.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
533
534 In this section:
535
536 * Enable – a flag to enable the protection;
537 * Delay before setting the error, millisecond;
538 * Delay before clearing the error, second;
539 * Lock – a flag to block the error until the device is restarted.
540
541 If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
542
543 * a command for charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
544
545 === Insulation ===
546
547 The BMS Mini device can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
548
549 To change the insulation monitoring parameters, select the "Protections → Insulation" section:
550
551 [[image:1733748083469-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
552
553 In this section:
554
555 * Enable – a flag to enable the protection;
556 * Delay before setting the error, second;
557 * Delay before clearing the error, second;
558 * Lock – a flag to block the error until the device is restarted.
559
560 Error is set if corresponding discrete input is set up and it receives logical zero.
561
562 === Critical error ===
563
564 To change the critical error parameters, select the "Protections → Critical error" section:
565
566 [[image:1733748083469-183.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
567
568 In this section:
569
570 * Enable – a flag to enable the protection;
571 * Delay before setting the error, millisecond;
572 * Delay before clearing the error, second;
573 * Lock – a flag to block the error until the device is restarted.
574
575 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
576
577 * “Battery cover error”;
578 * “Cell monitor offline”;
579 * “Cell count error”;
580 * “ADC error”;
581 * “Current sensor error”;
582 * “Shunt offline”;
583 * “Shunt error”;
584 * “No temp. sensors”;
585 * “Temp. sensor is shorted”;
586 * “Settings error”;
587 * “WDT reset”;
588 * “Stuck contactor”;
589 * “Contactor feedback error”;
590 * “Insulation fault”.
591
592 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.