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8.4 Optional two channel arc
protection card
8 Connections
Technical description
192
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VM265.EN011
8.3.3.
X4 rear panel connector (local RS232 and
extension RS485 ports)
Rear panel port
(LOCAL)
Pin
Signal
X4
1
No connection
X4
2
Rx in, RS232 local
X4
3
Tx out, RS232 local
X4
4
DTR out (+8 V)
X4
5
GND
X4
6
No connection
X4
7
B
RS485 extension port
X4
8
A+ RS485 extension port
X4
9
No connection
NOTE! In the VAMP relays a positive RS485 voltage from A+ to B
corresponds to
bit value “1”. In X4 connector the RS485 extension port is not galvanically
isolated.
8.4.
Optional two channel arc protection
card
NOTE! When this option card is installed, the parameter "Arc card type" has
value "2Arc+BI/O". Please check the ordering code in chapter 12.
NOTE! If the slot X6 is already occupied with the DI19/DI20 digital input card,
this option is not available, but there is still one arc sensor channel
available. See chapter 8.5
The optional arc protection card includes two arc sensor
channels. The arc sensors are connected to terminals X6: 4-5
and 6-7.
The arc information can be transmitted and/or received
through digital input and output channels. This is a 48 V dc
signal.
Connections:
X6: 1
Binary input (BI)
X6: 2
Binary output (BO)
X6: 3
Common for BI and BO.
X6: 4-5
Sensor 1
X6: 6-7
Sensor 2
The binary output of the arc option card may be activated by
the arc sensors or by any available signal in the output matrix.
The binary output can be connected to an arc binary input of
another VAMP protection relay or manager.
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