Circutor CVM-C4 Series, Инструкция по эксплуатации

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10
CVM-C4
Instruction Manual
of
0�25 A
.
If the voltage to be measured is higher than the nominal input voltage, a voltage transformer must be
connected to the device.
If more than one device is connected to the current transformer, they must be connected in series.
Before disconnecting the current measurement connection cables, be sure to disconnect the trans-
former’s primary cables and bridge the secondary.
The device can operate in three-wire, three-phase mode or four-wire, three-phase mode, the user
selecting the corresponding connection mode according to the installation. An incorrect type of con-
nection or an error in phase sequence may cause measurement errors.
3�3�- DEVICE TERMINALS
Table 4: List of CVM-C4 terminals
Device terminals
1: L/+ , Power supply 15: RO1, Relay Output 1 (Common)
2: N/- , Power supply 16: Relay Output 1 (NO) / Relay Output 2 (Common)
4: I1 S1 , Current input L1 17: RO2: Relay output 2 (NO)
5: I1 S2 , Current input L1 47: +, Impulse output 1
6: I2 S1
, Current input L2
48: -,
Impulse output 1
7: I2 S2
, Current input L2
49: +,
Impulse output 2
8: I3 S1 , Current input L3 50: -, Impulse output 2
9: I3 S2 , Current input L3 58: A , RS-485
11: U1 , Voltage input L1 59: B , RS-485
12: U2
, Voltage input L2
70:
Common digital inputs
13: U3
, Voltage input L3
71: DI1
, Digital input 1
14: UN / U2
, Voltage input N/L2
72: DI2
, Digital input 2
58 49 50 2 1
49
47 48
4
1
4 5 6 7
5 6 7 8 9
8 9
11 12 13 14
47 48 59 70 71 72 15 16 17 18
59
50 58
72
70 71
17
15 16
2
14 13 11 12
Figure 4: CVM-C4 terminals