Figure 12.5
Alarm-2
17 18
C
NO
RLY
ALARM -2 RELAY OUTPUT
This relay output status is determined by logically ORing the Alarm-2 status of all the devices.
Potential-free Relay changeover contacts NO (Normally Open) and C (Common) rated 2A/240
VAC (resistive load) are provided as Relay output.
Figure 12.6
Ext. Voltage
13 14
-
+
VDC
EXCITATION VOLTAGE OUTPUT
12 VDC is available for Buzzer excitation supply. Connect the (+) to terminal 13 and (-) to terminal
14.
POWER SUPPLY
Figure 12.7
As standard, the UniRec is supplied with power connections suited for 85 to 264 VAC line supply. Use well-insulated copper
conductor wire of the 2 size not smaller than 0.5mm for power supply connections. Connect Line (Phase) supply line to
terminal 10 and the Neutral (Return) supply line to terminal 11 as shown in Figure 12.7. The controller is not provided with fuse
and power switch. If necessary, mount them separately. Use a time lag fuse rated 1A @ 240 VAC.
COMMUNICATION PORT FOR INTERFACING WITH DEVICES
Figure 12.8
DEVICE - 2
9
8
RS485
Comm Port
Device
UniRec
RS485
COMM PORT
DEVICE - 1
RS485
COMM PORT
To Next Device
The UniRec is connected to 1 or more Devices using RS485 Serial Communication Port. The wiring connections for
interfacing is shown in the figure 12.8. For reliable noise free communication, use a pair of twisted wires inside screened cable.
The wire should have less than 100 ohms / km nominal DC resistance (Typically 24 AWG or thicker).
User Manual
UniRec
24
Line
Neutral
10 (L)
11 (N)
2 Pole
Isolating Switch
Fuse
Power Supply
Terminal
