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EATON

 www.eaton.com

1.7.  Error detection

The cyclic redundancy check (CRC) field occupies two bytes and 
contains a 16-bit binary value. The CRC value is computed by the 
transmitting device and then appended to the data frame. The 
receiving device recalculates the CRC value when receiving the 
data, and compares it with the value in the received CRC field. If 
the two values are not equal, an error has occurred.

During CRC computing, first preset a 16-bit register to all 1s; then 
calculate the 8-bit byte in the data frame continuously with the 
current value of this register; only the 8 data bits of each byte are 
involved in generating a CRC.  The start bit, stop bit, and parity bit 
that may be used do not apply to CRC.

During generating a CRC, XOR each 8-bit byte with contents in 
the register, shift the result to the low bit, and supplement the 
high bit with "0". Then shift out and check the least significant bit 
(LSB). If the LSB is 1, this register will perform an exclusive OR 
operation with a preset fixed value. If 0, then no action will be 
taken.

Repeat the above process until eight shift operations are per-
formed. When the last bit (the 8th bit) is shifted, XOR the next 
8-bit byte with the current value of the register. Perform another 
eight shift XOR operations described above. When all the bytes 
in the data frame are processed, the final value generated is the 
CRC value.

To generate a CRC, follow below steps:

(1)  Preset a 16-bit register as 0FFFFH (all 1s), called CRC register;

(2)  Perform an XOR computing of the first 8-bit byte in the data 

frame with the low byte in the CRC register, and store the 
result in the CRC register;

(3)  Shift the CRC register one bit to the right, fill the most sig-

nificant bit (MSB) with 0, shift out the least significant bit and 
check;

(4)  If the LSB is 0: repeat the third step (perform next shift);

If the LSB is 1: perform an XOR computing of the CRC register 

with a preset fixed value (0A001H);

(5)  Repeat Step 3 and 4 until eight shifts are performed. In this 

way, eight bits will be processed completely;

(6)  Repeat Step 2 to Step 5 to process the next eight bits until all 

bytes are processed;

(7)  The final value generated in the CRC register is the CRC value.

2. Communication connection

2.1. Mailing address

The communication address can be set from 0 to 255. After the 
address is set, the controller will only receive and respond to the 
request for the set address. After the controller changes the com-
munication address during operation, it will receive and respond 
with the new address.

2.2. Communication baud rate

The communication baud rate can be set to 9600BPS, 19200BPS, 
38400BPS, 115200BPS. After the baud rate is set, the controller 
will always receive and respond with its set baud rate. After the 
controller changes the baud rate during operation, it will receive 
and respond at the new baud rate.

2.3. Link dead operation

Link dead execution mode can be set to alarm or ignore; link 
timeout time can be set to 2~200S, with 1s step; if the controller 
does not receive a valid data frame within the set scan period, it 
will consider the link dead and execute corresponding link dead 
operation.

2.4. Total device information count

The controller receives the accumulated count of valid data 
frames, starting from powering on or the last counter reset.

2.5. CRC check error count

The controller will accumulate the CRC error count if it receives 
the check code error’s data frame.

2.6. Error response count

The controller will accumulate the error message response count 
if it receives the error message’s data frame.

Instruction Leafl et

Effective September 2022

IZM6 Series Air Circuit Breaker

Operating Instruction Leafl et

Summary of Contents for IZM6 Series

Page 1: ...GE WARNING THE INSTRUCTIONS CONTAINED IN THIS IL AND ON PRODUCT LABELS HAVE TO BE FOLLOWED OBSERVE THE FIVE SAFETY RULES DISCONNECTING ENSURE THAT DEVICES CANNOT BE ACCIDENTALLY RESTARTED VERIFY ISOLA...

Page 2: ...ts and Industry Standards Safety All safety codes and safety standards must be strictly observed during installation operation and maintenance of this equipment WARNING THE WARNINGS AND CAUTIONS INCLU...

Page 3: ...and installation 10 Circuit breaker operation 15 Controller operation and protection characteristics 18 PXR4 1 PXR6 1 intelligent controller 18 Operation description of intelligent controller 19 Other...

Page 4: ...y protection among which the PXR4 and PXR6 intelligent controllers can be equipped with optional communication interfaces easy to connect the field bus to offer four remote functions including remote...

Page 5: ...n above 55 C derating is needed for use See Derating Factor Table The altitude should not exceed 5000m at the installation site When higher than or equal to 2000m the electrical performance of the cir...

Page 6: ...witch Grounding bolt Position locking device Lock catch button Three position indication Nameplate Open Closed indication Released Charged indication Manual charging handle Closing button Opening butt...

Page 7: ...1 10 Arc chamber Shunt coil Under voltage release Secondary terminal Delivery handle Operating mechanism Basic device Intelligent controller Reset button Opening button Closing button Cover Auxiliary...

Page 8: ...e circuit breaker into the cabinet Circuit Breaker IZM6 Hexagon head bolt GB5783 Nut GB6170 Washer GB97 GB93 IZM65 M12 30 M12 12 IZM67 M12 30 M12 12 IZM69 M12 30 M12 12 otes N See below diagram for de...

Page 9: ...e m 2000 3000 4000 4500 5000 Power frequency voltage withstand V 5000 4500 3500 3000 2900 Short circuit breaking capacity correction factor 1 0 83 0 71 0 66 0 63 Operating current correction factor IZ...

Page 10: ...M4 62 Power consumption of the shunt coil Insulation voltage Ui Rated control voltage Us V Actuating voltage Pickup transient current Pickup transient power 400V AC230 0 7 1 1 Us 2 8A 575VA AC400 0 7...

Page 11: ...t the circuit breaker from tripping due to short time voltage drop The delay time can be selected usually from 1s 3s 5s to 10s by users For special requirements on the delay time please contact Eaton...

Page 12: ...e One lock and one key A circuit breaker is equipped with one lock and one key The circuit breaker is not allowed to close in the locked state Two locks and one key Two circuit breakers are equipped w...

Page 13: ...or ABC and about 2 3m for N Output about 1m Mounting method Rail mounting mounting hole installation 2 How to use 1 Mount the circuit breaker and controller in a normal way 2 Mount the voltage transfo...

Page 14: ...o the shape shown above but the sum of all bending angles cannot exceed 720 degrees Circuit breaker 1 Circuit breaker 2 0 0 0 1 1 0 otes N 1 Closed 0 Open 2 The mounting direction of the external neut...

Page 15: ...n the circuit breaker is in CHARGED and OPEN states press down the green button I and the circuit breaker will be closed The OPEN and CLOSED indicators are switched from 0 to 1 Manual opening When the...

Page 16: ...n switch hole of the cassette Press down the unlock button and turn the crank handle clockwise to move the basic device inward During the process from the Disconnected position to Connected position e...

Page 17: ...ted manu ally and by the motor operator CAUTION MAKE SURE THAT THE CLAMPING BAND A ON THE SLIDING PLATE OF THE CASSETTE FULLY ENTERS THE CORRESPONDING GROOVE OF THE BASIC DEVICE SLIDING PLATE PART B C...

Page 18: ...ating power supply The controller is fed simultaneously by an auxiliary power supply and a power supply transformer to ensure reliable operation even under small load and short circuit conditions Two...

Page 19: ...ntroduction 1 2 3 6 7 8 4 5 Controller model Rated current Fault alarm indicator Ammeter window Power meter window Current protection type indication Setting keyboard Status indication 1 2 3 5 4 6 7 8...

Page 20: ...e phase voltage of the corresponding phase Setup Always on Can view or modify each protection characteristic setting Query Always on Can query historical fault information Test Always on Can carry out...

Page 21: ...he modified value has been saved Press the Return key to exit the modification of the set point Step 3 Repeat Step 2 until all the set points are modified Press the Return key to exit the setup functi...

Page 22: ...65 0 13 0 26 0 521 1 042 1 563 2 083 2 604 3 125 3 646 4 167 Instantaneous protection I Instantaneous protection set point Tolerance 15 Ii In 1In 15In OFF Step is 1 or 2A Ground fault protection G Gro...

Page 23: ...value of the primary circuit voltage When the three line voltages are all greater than the set value that is when the minimum value of the three line voltages is greater than the over voltage protect...

Page 24: ...wer source box or a detection unit can be inserted Measurement Function Key 1 to switch to default main menu under Measurement which is the Left key in the password input interface Set up Function Key...

Page 25: ...p I O setup Measurement menu Press the button to return to the default interface In other non default interfaces press the button to switch to the Measurement menu Protection Parameter Setting menu Pr...

Page 26: ...operations the system will return to the default interface in a few minutes Sub menu operation example Overload long delay Current alarm No of operations Contact wear Product info Trip record Alarm re...

Page 27: ...d long delay s the time calculated to the overload delay curve formula divided by 10 is the short delay inverse delay time Thermal memory protection Subject to long delay settings otes N When the inve...

Page 28: ...er measures the RMS value of the primary circuit voltage When the three line voltages are all greater than the set value that is when the minimum value of the three line voltages is greater than the o...

Page 29: ...0 9 No action or alarm Voltage imbalance alarm return characteristic Delay tolerance 10 Actual voltage imbalance value set point 0 9 Return Actual voltage imbalance value set point 1 1 No return Alarm...

Page 30: ...t includes sending an alarm signal or tripping Action threshold Hz Under frequency 45 return value Step is 0 5 Over frequency Return value 65 Step is 0 5 Action delay time s 0 2 50 Step is 0 1 Return...

Page 31: ...ker 2 5 such as Position a the upstream circuit breaker will not receive the zone interlocking signal and thus trip instanta neously to quickly cut off the faulty circuit To set up parameters At least...

Page 32: ...nsmission method host slave half duplex mode First the signal from the host is addressed to a unique terminal device slave device and then the response signal from the slave device is transmitted to t...

Page 33: ...ld occupies two bytes and contains a 16 bit binary value The CRC value is computed by the transmitting device and then appended to the data frame The receiving device recalculates the CRC value when r...

Page 34: ...Upstream message from slave to host The response includes the slave address function code number of data and CRC error check Device address Function code Variable total byte number Variable value Hig...

Page 35: ...s Low byte Variable number High byte Variable number Low byte Check code Low byte Check code High byte 03H 10H 00H 2AH 00H 04H E1H E0H Table 2 7 Function Code 10 upstream message example 3 Communicati...

Page 36: ...t A R W 1 or 2 Note 1 32H Short delay fixed time setting time Uint S R W See Table 4 8 4 33H Ground residual current setting current Uint A R W Ground 1 or 2 Note 1 Residual current 0 01 34H Ground re...

Page 37: ...ble 29H Relay output contact 3 High byte of Variable 29H Relay output contact 4 Function No Output function Function No Output function Function No Output function 0 Undefined 4 Short delay alarm 8 Lo...

Page 38: ...esponding to 2Ir current No Standard inverse time Fast inverse time Extremely fast inverse time for general use Extremely fast inverse time for motor use HV fuse compatible I T 1 0 36 1 00 3 32 2 94 0...

Page 39: ...ed time setting table No 0 1 2 3 4 5 6 7 8 9 Setting time 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 4 8 5 Imbalance time setting table Wind power imbalance OFF No 0 1 2 3 4 5 6 7 8 9 10 Setting time 0 1...

Page 40: ...and 01 06 00 4C FF 00 09 ED Action command Downstream command example for remote closing 01 06 00 4D 00 FF 59 9D Preparatory command 01 06 00 4C 00 FF 08 5D Action command If the control command is ac...

Page 41: ...device responds to the query containing the address When the slave sends back a response the slave address data in the response will tell the host which slave device it is communicating with 1 4 Func...

Page 42: ...ft out the least significant bit and check 4 If the LSB is 0 repeat the third step perform next shift If the LSB is 1 perform an XOR computing of the CRC register with a preset fixed value 0A001H 5 Re...

Page 43: ...yte Variable value High byte Variable value Low byte Check code Low byte Check code High byte 03H 03H 06H 00H 00H 00H 00H 00H 00H 38H 15H Table 3 3 Function Code 03 upstream message example 3 2 DO out...

Page 44: ...rt address High byte Variable start address Low byte Variable number High byte Variable number Low byte Number of variable bytes 11H 10H 04H 08H 00H 03H 06H Variable value High byte Variable value Low...

Page 45: ...nt A R 1 or 2 Note 1 269 Phase B current Uint A R 1 or 2 Note 1 270 Phase C current Uint A R 1 or 2 Note 1 271 Neutral phase current Uint A R 1 or 2 Note 1 272 Max phase current Uint A R 1 or 2 Note 1...

Page 46: ...ent demand Uint A R 1 or 2 Note 1 315 System total active power demand Int kW R 1 316 System total reactive power demand Int kvar R 1 317 System total apparent power demand Int Kva R 1 318 Phase seque...

Page 47: ...ta 2 Uint R 775 Fault data 3 Uint R 776 Fault data 4 Uint R 777 Fault data 5 Uint R 778 Fault data 6 Uint R 779 Fault data 7 Uint R 780 H Current power on time year L Present power on time month Uint...

Page 48: ...um demand c Uint A R W 1 or 2 Note 2 Can only write 0 1040 Phase C current maximum demand c Uint A R W 1 or 2 Note 2 Can only write 0 1041 N phase current maximum demand c Uint A R W 1 or 2 Note 2 Can...

Page 49: ...2 Uint R W 1292 Load monitoring set time 1 Uint R W 1293 Load monitoring set time 2 Uint R W 1294 Protection operating mode 1 Bit Uint R W See 5 17 1295 Protection operating mode 2 Bit Uint R W See 5...

Page 50: ...1325 Over voltage return time Uint 20mS R W 10 3000 Step is 5 1326 U imbalance start value Uint 1 R W 2 30 Step is 1 1327 U imbalance start time Uint 20mS R W 10 3000 Step is 5 1328 U imbalance retur...

Page 51: ...ormation 5 3 Present alarm Bit Range Value Meaning 0 0 2 0 No 1 Yes Load monitoring 1 alarm 1 0 1 0 No 1 Yes Load monitoring 2 alarm 2 0 1 0 No 1 Yes Overload pre alarming 3 0 1 0 No 1 Yes Ground resi...

Page 52: ...Short circuit short delay fixed time fault 10 Short circuit instantaneous fault 11 MCR action 12 HSISC action over limit trip 13 Ground fault 14 Residual current fault trip 15 Current imbalance fault...

Page 53: ...current fault Phase A current A 1 or 2 Note 1 Phase sequence fault under frequency fault over frequency fault under voltage fault over voltage fault voltage imbalance fault Uab V 1 5 Overload fault sh...

Page 54: ...0 32 See Function Setting Table DO2 function setting 1046 416H Bit Range Value Meaning 0 7 0 32 See Function Setting Table DO3 function setting 8 15 0 32 See Function Setting Table DO4 function setti...

Page 55: ...1 P System power direction 3 0 1 0 Lower incoming 1 Upper incoming System incoming method 4 0 0 Arithmetic Demand current calculation method 5 0 0 Sliding Demand current time window type 6 7 0 0 Arith...

Page 56: ...mode Unit Range Variant format Current method 1 Set point 1 A 0 2 1 0 times rated current Step is 1 1 or 2 Note 1 Set point 2 A 0 2 1 0 times rated current Step is 1 1 or 2 Note 1 Set time 1 1 Tr 20...

Page 57: ...e protection 2 3 0 2 0 Alarm 1 Trip 2 OFF Current imbalance protection 4 5 0 2 0 Alarm 1 Trip 2 OFF Under frequency protection 6 7 0 2 0 Alarm 1 Trip 2 OFF Over frequency protection 8 9 0 2 0 Alarm 1...

Page 58: ...3P 4P The shaded part is the lap surface of the busbar Standard type Disconnected position CB bottom CB bottom CB center CB center Cutout center Outside of the door 407 41 325 430 522 430 57 5 41 203...

Page 59: ...out 3P 4P 390 422 381 400 315 200 390 496 537 Outside of the door Distance when removing the CB The shaded part is the lap surface of the busbar Standard type CB bottom CB bottom CB center CB center C...

Page 60: ...440 115 325 4 13 4 13 23 430 104 134 46 175 82 87 5 395 Connecting area 30 42 12 5 50 80 3 13 Front view Vertical wiring 407 41 325 430 522 430 57 5 41 203 5 440 Standard type Outside of the door Dis...

Page 61: ...4 248 372 297 7 16 4 273 49 6 327 2 18 4 57 5 Horizontal wiring Door escutcheon cutout 3P 4P Outside of the door Disconnected position The shaded part is the lap surface of the busbar Standard type CB...

Page 62: ...Vertical wiring 407 41 325 430 522 430 57 5 41 203 5 440 Outside of the door Disconnected position The shaded part is the lap surface of the busbar 87 5 Instruction Leaflet Effective September 2022 IZ...

Page 63: ...5 2 124 248 372 297 7 16 4 273 49 6 327 2 18 4 57 5 Horizontal wiring 3P 4P Door escutcheon cutout Outside of the door Disconnected position The shaded part is the lap surface of the busbar CB bottom...

Page 64: ...390 40 79 67 390 422 381 400 315 200 390 496 537 Front view Vertical wiring The shaded part is the lap surface of the busbar Standard type Outside of the door Distance when removing the CB Instruction...

Page 65: ...0 50 30 32 12 5 3 13 3P 4P Horizontal wiring Door escutcheon cutout Outside of the door Distance when removing the CB The shaded part is the lap surface of the busbar Standard type CB bottom CB bottom...

Page 66: ...20 60 134 390 40 79 67 4 13 The shaded part is the lap surface of the busbar 390 422 381 400 315 200 390 496 537 Outside of the door Distance when removing the CB Front view Vertical wiring Instructio...

Page 67: ...5 235 4 13 8 5 8 5 185 2 185 2 327 2 16 5 273 153 153 12 185 2 185 2 327 2 16 5 273 153 153 12 57 5 3P 4P Horizontal wiring Door escutcheon cutout Outside of the door Distance when removing the CB CB...

Page 68: ...2 20 46 Disconnected position Outside of the door 6X13X18 107 25 25 25 25 25 25 45 12 5 30 40 220 8 x 13 Door escutcheon cutout 185 2 185 2 124 248 372 297 7 16 4 273 16 6 49 6 327 2 31 6 189 11 5 CB...

Page 69: ...16 4 273 16 6 49 6 327 2 31 6 189 11 5 CB bottom CB center Door cut out 250 250 M 12 PE 853 480 60 785 653 134 154 104 395 175 102 20 46 Disconnected position Outside of the door 6X13X18 107 220 50 50...

Page 70: ...46 5 124 32 4 162 M12 PE 235 57 5 210 25 25 25 25 25 25 35 28 32 8 x 13 185 2 185 2 327 2 16 5 273 153 153 9 189 8 5 CB bottom CB center Door cut out 134 20 60 Distance when removing the CB Outside of...

Page 71: ...00 390 578 200 133 35 9 19 778 246 5 246 5 124 32 4 162 M12 PE 235 57 5 210 78 82 40 50 20 50 60 8X 13 Front view Horizontal wiring Door escutcheon cutout 185 2 185 2 327 2 16 5 273 153 153 9 189 8 5...

Page 72: ...vided by users themselves 3 The secondary wiring of the power supply module is shown in the diagram the external power supply is input from U1 and U2 and the two output terminals of the power supply m...

Page 73: ...sponding secondary wiring terminals 1 and 2 4 The contact output functions are optional The output functions can be selected with reference to DO Function Setting Table on Page 54 for default settings...

Page 74: ...o ener gizing the main circuit Check carefully whether there is any foreign object fallen into the circuit breaker If any the object must be completely removed and the circuit breaker must be kept cle...

Page 75: ...faulty 6 The handle cannot be inserted to lever out or in the basic device A padlock is mounted with the Disconnected position Remove the padlock The sliding panel or basic device is not fully levered...

Page 76: ...ommendations descriptions and safety nota tions in this document are based on Eaton Corporation s Eaton experience and judgment and may not cover all contingencies If further information is required a...

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