11
DC Power Input
A two (2) pin wire terminal is provided on the rear termination board for DC
power input. The terminal is clearly labeled
DC IN
. Connect the external DC
power to this terminal. Nominal DC power is 24 Volts
Refer to figure 3 for the location of the DC IN terminal.
Connecting Sensors to the Monitor
Three (3) pin screw type terminals are provided on the termination board for
remote sensor connection. The terminals are labeled as SENSOR and each pin
is identified as +,
-
, & E for sensor DC supply, ground, and signal
respectively. The DC is supplied to the sensor by the control module. The
supply is fused through a 2 amp miniature fuse on the control module.
Each remote sensor should be connected by a 3 conductor shielded cable. See
figure 4 for remote sensor connection.
Alarm Wiring
Figure 4 shows a typical wiring diagram for connecting alarm devices to relay
contacts on the control module. Note that contacts are dry or potential free
contacts. Refer to the wiring details provided by the manufacturer of alarm
devices.
Figure 4 shows the wiring of alarm devices to the relay contacts of a control
module. Similar wiring procedure should be followed if the auxiliary relay
board is used to connect to the alarm devices.
In order to use the auxiliary relay board all jumpers JMP-1 through JMP-11 are
installed. The jumpers are used to connect each contact of the alarms (Low, Hi
& Hi-Hi) to common auxiliary alarms. The relay on the Auxiliary relay board
will be energized if the corresponding alarm relay is activated on any of the 12
control modules in the rack assembly.
Refer to figure 5.
