SICOM3028GPT/3424PT/3028GP/3424P User’s Manual-v1.2
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Note
: The cross section area of chassis grounding cable should be more than 2.5mm
2
. T he
grounding resistance requirement: <5
Ω
.
6.8 Relay Contact
The relay contact is used for alarm output. When the switch works normally, the
normally-open co ntact of t he al arm r elay is closed a nd t he n ormally-closed
contact is open; when the alarm occurs, the normally-open contact is open and
the nor mally-closed c ontact is closed. The al arm i s outputted through a 3-pin
5.08mm spacing terminal block as shown in Figure 44.
Figure 44 3-pin 5.08mm Spacing Alarm Terminal Block
The electrical parameters of the relay:
Max Switch Voltage: 250VAC/220VDC;
Max Switch Current: 2A
Max Switch Power: 60W
Note
: P in 1 a nd pin 2 are nor mally-open c ontacts; pi n 2 an d pi n 3 ar e normally-closed
contacts. When the switch works normally, the pin 1 and 2 are closed, pin 2 and pin 3 are
open; when the alarm occurs, the pin 1 and 2 are open; pin 2 and 3 are closed.
Wiring and mounting
Step 1: Take the alarm terminal block off the switch.
Step 2: Insert the cable for alarm output into the alarm terminal block according to
the requirements and fix the cable.
Step 3: Put the alarm terminal block back to the switch with the connected cable.
7 LED Indicators