42
9.4.4.2 Relay Card
Optional Component can be used only in combination with
a HYDROVAR Master Inverter.
The Relay Card is connected to the Control Card using
connection slot X6 (See chapter 9.4.4.1).
Please Note:
When using the relay contacts for switching
external contactors, a corresponding RC-snubber-
circuit is recommended, to prevent disturbances
arising during a switching action of the relay!
Terminals Relay Card
X10 Relay Card
1
Relay 1
2
Relay 2 [Max. 250VAC] [1A general use]
3
Relay 3
4
Relay 4 [Max. 30VDC] [1A general use]
5
Relay 5
X10/
6
COMMON
COM
Relay 5
Relay 4
Relay 3
Relay 2
Relay 1
Connector to
Control Card
Terminal Block
Contacts for switching the fixed speed
pumps.
Please consider that the fixed speed pumps
can’t be switched directly by the Relay Card
(an external panel for the contactors of the
D.O.L or STAR/DELTA starters is necessary).
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