2
Installation
18
EN-RaychemHWATECOcontroller-IM-H57340 03/13
Alarm wiring (optional)
The alarm contact (24 Vac, 24 Vdc, 1A) inside the con-
troller can be used to switch an external device. The
contact is closed during operation and open during
an alarm or during loss of power. In a network, all
alarm contacts should be connected in series.
Alarm,
Sensor,
and BMS
terminals
PL6
Alarm c
ont
act
TEMP
BMS
B A
NC O NO
Figure 11: Connecting the alarm contact
The alarm terminal (PL6) is located in the upper
right corner of the controller and has the text “alarm
contact” next to it. To connect a wire, use a screw-
driver to push down the orange tab on the side of
the terminal. Put the wire into the hole and release
the orange tab. The wires used for the alarm contact
should be rated for 300 V. See “Chapter 4, Error/
