CHAPTER 5: COMMUNICATIONS DEVICENET OPERATIONS
LM10 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5–57
5.1.11 Data Formats
F1: Full Load Current (16-bit unsigned integer)
Range: 0x000C to 0x1F40 (i.e. 1.2 to 800.0 A)
Multiplying factor: 0.1
Example: 123.4 stored as 1234
F2: Ground Fault
Format: two bytes in format 0xHHLL, where LL is the pickup level and HH is the time delay
Byte LL range: 0x00, 0x02 to 0x64 (i.e. 0.4 to 20.0 A), where 0x00 is disabled
Byte LL multiplying factor: 0.2 (i.e. actual = byte LL in decimal × 0.2 amps)
Byte HH range: 0x00 to 0x19 (i.e. 0 to 2.5 seconds)
Byte HH multiplying factor: 0.1 (i.e. actual = byte HH in decimal × 0.1 seconds)
F3: Jam
Format: two bytes in format 0xHHLL, where LL is the pickup level and HH is the time delay
Byte LL range: 0x00, 0x64 to 0xFA (i.e. 100 to 250%), where 0x00 is disabled
Byte HH range: 0x00 to 0xC8 (i.e. 0 to 1000 seconds)
Byte HH multiplying factor: 5 (i.e. actual = byte HH in decimal × 5 seconds)
F4: Stall
Format: two bytes in format 0xHHLL, where LL is the pickup level and HH is the time delay
Byte LL range: 0x00, 0x42 to 0x78 (i.e. 330 to 600%), where 0x00 is disabled
Byte LL multiplying factor: 5 (i.e. actual = byte LL in decimal × 5%)
Byte HH range: 0x00 to 0x3C (i.e. 0 to 30.0 seconds)
Byte HH multiplying factor: 0.5 (i.e. actual = byte HH in decimal × 0.5 seconds)
F5: Current Unbalance
Format: two bytes in format 0xHHLL, where LL is the pickup level and HH is the time delay
Byte LL range: 0x00, 0x02 to 0x19 (i.e. 2 to 25%), where 0x00 is disabled
Byte HH range: 0x00 to 0xFF (i.e. 0 to 255 seconds)
F6: Load Loss
Format: two bytes in format 0xHHLL, where LL is the pickup level and HH is the time delay
Byte LL range: 0x00, 0x0F to 0x64 (i.e. 15 to 100%), where 0x00 is disabled
Byte HH range: 0x00 to 0xFF (i.e. 0 to 255 seconds)
F7: Power Transformer
Format: two bytes in format 0xHHLL, where LL is the PT ratio and HH is reserved
Byte LL enumeration:
F8: Current Transformer
Format: two bytes in format 0xHHLL, where LL is the CT ratio and HH is reserved
Byte LL enumeration:
Value PT Ratio Value PT Ratio
0 200:120 6 3300:120
1 240:120 7 4200:120
2 480:120 8 4800:120
3 600:120 9 5400:120
4 2400:120 10 6000:120
5 3000:120 11 7200:120
Value CT Ratio Value CT Ratio
1 27 A sensor pack 9 250:5
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