Issue
Reading alarm registers
Product Line
CM3000
CM4000
Environment
Alarming
Resolution
Register 10011 - 10022 (12) contain the active alarm status for all alarms in a Series 4000 or 3000 Circuit Monitor (CM3, CM4). The least significant register is 10022 and 10011 is the most significant register. Therefore, register 10022 contain the status of the first 16 alarms. In binary, the least significant bit (referred to as bit 00) to the right of the register represents alarm 1, bit 01 = alarm 2, bit 02 = alarm 3, and ...........
1 = alarm is active
0 = alarm is inactive
Example:.
Alarm 2 and 4 are active (bits 01 and 03)
register 10022 reads 0000000000001010 in binary
Alarm Description
01 Over Current Phase A Over Ia
02 Over Current Phase B Over Ib
03 Over Current Phase C Over Ic
04 Over Current Neutral Over In
05 Over Current Ground Over Ig
06 Under Current Phase A Under Ia
07 Under Current Phase B Under Ib
08 Under Current Phase C Under Ic
09 Current Unbalance, Max I Unbal Max
10 Current Loss Current Loss
11 Over Voltage Phase AN Over Van
12 Over Voltage Phase BN Over Vbn
13 Over Voltage Phase CN Over Vcn
14 Over Voltage Phase AB Over Vab
15 Over Voltage Phase BC Over Vbc
16 Over Voltage Phase CA Over Vca
17 Under Voltage Phase A Under Van
18 Under Voltage Phase B Under Vbn
19 Under Voltage Phase C Under Vcn
20 Under Voltage Phase AB Under Vab
21 Under Voltage Phase BC Under Vbc
22 Under Voltage Phase CA Under Vca
23 Voltage Unbalance LN, Max V Unbal L-N Max
24 Voltage Unbalance LL, Max V Unbal L-L Max
25 Voltage Loss (loss of A,B,C, but not all) Voltage Loss
26 Phase Reversal Phase Rev
27 Over kVA Demand Over kVA Dmd
28 Over kW Demand Over kW Dmd
29 Over kVAR Demand Over kVAR Dmd
30 Over Frequency Over Freq
31 Under Frequency Under Freq
32 Lagging true power factor Lag True PF
33 Leading true power factor Lead True PF
34 Lagging displacement power factor Lag Disp PF
35 Leading displacement power factor Lead Disp PF
36 Over Current Demand Phase A Over Ia Dmd
37 Over Current Demand Phase B Over Ib Dmd
38 Over Current Demand Phase C Over Ic Dmd
39 Over THD Voltage AN Over THD Van
40 Over THD Voltage BN Over THD Vbn
41 Over THD Voltage CN Over THD Vcn
42 Over THD Voltage AB Over THD Vab
43 Over THD Voltage BC Over THD Vbc
44 Over THD Voltage CA Over THD Vca
45-80 Reserved for custom alarms.
