20
Wiring the Alarm Contact:
The Alarm Contact consists of the two last contacts of the terminal block on switch’s top
panel.
ALM:
The two last contacts of the 6-contact terminal block connector are used to detect
both power faults and port faults. The two wires attached to the ALM contacts form an
open circuit when:
1. The Switch has lost power from one of the DC power inputs.
OR
2. One of the ports for which the corresponding PORT ALARM DIP Switch is set to ON
is not properly connected.
If neither of these two conditions is satisfied, the Fault circuit will be closed.
WARNING
Use
copper
conductors only,
60/75˚C
(140/167°F)
, tighten to
0.56 N•m (5
lb•in).
The wire gauge for the terminal block should range between
12~18 AWG
.
Powering On the Unit
The Switch accepts the power input voltage from 20~57VDC.
Insert the power cables into the terminal block located on the top of the device.
Check the front-panel LEDs as the device is powered on to verify that the Power
LED is lit. If not, check that the power cable is correctly and securely plugged
in.
Notice:
Turn off the power before connecting modules or wires.
-
The correct power supply voltage is listed on the product label. Check the
voltage of your power source to make sure that you are using the correct
voltage. Do NOT use a voltage greater than what is specified on the product
label.
-
Calculate the maximum possible current in each power wire and common
wire. Observe all electrical codes dictating the maximum current allowable
for each wire size. If current go above the maximum ratings, the wiring
could overheat, causing serious damage to your equipment.
DI Interface Settting:
DI is an interface that adds the ability to input and output digital signals in parallel. Using
a digital input makes it possible to monitor (read) the statuses of the external sensors (i.e
door sensors, water sensors) from remote site.
Reset Button
There has “Reset” button in front of Switch which can help to manually hardware reboot.