Connection
16
Warning:
Do not touch any exposed conducting wire, terminal, or component with a voltage warning
sign, because it may cause personal injury.
Do not remove any part or plug in or out any connector when the device is powered on.
4.8 Alarm Terminal Block
The alarm terminal block is used for alarm output. When the switch works properly, the
normally-open contacts of the alarm relay are closed and the normally-closed contacts are
open. When an alarm occurs, the normally-open contacts are open and the normally-closed
contacts are closed. The alarm is outputted through a 3-pin 5.08mm spacing terminal block,
as shown in Figure 15.
Figure 15 Alarm Terminal Block
Electrical parameters of the relay:
Max Switch Voltage: 250VAC/220VDC
Max Switch Current: 2A
Max Switch Power: 60W
Maximum dielectric voltage withstand: 2KV
Note:
Pin 1 and pin 2 are normally-open contacts; pin 2 and pin 3 are normally-closed contacts. When
the switch works properly, pin 1 and pin 2 are closed, pin 2 and pin 3 are open; when an alarm
occurs, pin 1 and pin 2 are open; pin 2 and pin 3 are closed.
