VAMP Ltd Arc protection system
User manual
VAMP 220 / 220R
VM220.EN004 Vamp 24h support phone : +358 (0)40 573 6316
35
5.7. Wiring multiple master systems
In applications comprising several master units, the master
units can be interconnected for transfer of arc and overcurrent
information via the BI/O (binary input/output) ports.
The following BI/O ports are available as standard delivery (see
also Figure 2.1.2-1):
La> X3: 12 Arc input / output
Lb> X3: 13
Arc output. Conditional. No activation if Ib> input
activated at the same time.
Lc> X3: 14
Arc input. Controls TRIP RELAY 4 provided that
front dip switch 7 is ON and dip switch 8 is OFF.
See section 6.7.
Ia> X3: 15 Overcurrent output
Ib> X3: 16 Overcurrent input / output
GND X3: 17
X3: 18
Ground for all BI/O signals
Table 5.7-1 BI/O ports.
To obtain transfer of arc information between two master units:
• Connect the systems through the BI/O terminals X3-
12, 13 or 14 (+).
• Connect the terminals X3-17 or 18 (GND).
• To obtain transfer of overcurrent information between
two master units:
• Connect the systems through the BI/O terminals X3-15
or 16 (+).
• Connect the terminals X3-17 or 18 (GND).
NOTE!
Note the polarity of the wires.
In the example in Figure 5.7-1 arc information is transferred in
both directions between the two master units. See also the
application example in section 8.1.
The slave units of the system should be connected to master
units in the same zone.
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