Figure 7: Cover
Do not connect the ground of the control card to other voltage potentials. All ground
terminals and ground of the RS485 connection are connected internally.
HVNG-IOM_CONTROL-BOARD_A_SC
Figure 8: Control board
6.6.1 Motor sensor connection
Terminals X1/7 and X1/8 are used to connect a motor sensor (PTC or thermal switch) to
stop the unit in case of failure; any other protective device can be connected to these
terminals.
As described in par. 3.6 Motor thermal protection, this input can be enabled by setting
par. 290 "STC Motor Protection" to data value "Thermistor trip".
6 Electrical Installation
HVL 2.015-4.220 Installation, Operation, and Maintenance Manual 35
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