GLT-299-7-16 Rev.0
Jun 12, 2018
1
Instruction Manual
VDOT-DOP-AC240V-SCI Dual Output Module
Before Installation
Please read these instructions carefully and keep for future reference.
The information in this document is subject to change without notice.
For updates please refer to our website.
Note
：
Follow the requirements for the installation of the product in
accordance with the Specifications. Otherwise it may cause malfunction.
Note
：
Do not install the product in any location where oil, dust, iron
powder, chemicals, or hydrogen sulphide may occur or affect the product.
It may cause malfunction.
This package contains the following items:
Main unit
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1
Oute r co ver
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1
Instruction Manual
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1
Tapping screw
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2
Pan head screw
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2
General Description
VDOT-DOP-AC240V-SCI Dual Output Module with Short Circuit
Isolator is an addressable dual output module that provides two dry
contacts. The contact rating is 4.8A at AC250V. The status of each dry
contact is controlled by a control panel.
General Operation
Normal Standby condition: The module receives polling from the control
panel at the regular interval. Polling LED (green) flashes.
Active condition: When receiving a control signal from the control panel,
the relay output is activated, and Output LED (red) illuminates.
Trouble condition: If an overcurrent occurs because SLC (Signaling Line
Circuit) is shorted, SCI LED (yellow) illuminates, and the module
communicates to the control panel the short status.
SCI (short circuit isolator) Function
The module has a built-in short circuit isolator. SCI circuit prevents
entire loop failure in the event of a short between L+ and L- on the loop.
If a short is detected between L+ and L-, the yellow LED is illuminated.
The line between Lin- and Lout- is disconnected automatically to isolate
the short circuit, and short circuit status is communicated to the control
panel. Upon removal of the short condition, the module will
automatically connect between Lin- and Lout- to restore the entire loop
to the normal standby status.
Polling LED (GREEN)
Output LED (RED)
SCI LED (YELLOW)
Address Setting Port
Figure 1
Figure 2
Compatibility Requirement
To ensure proper operation, the module shall be connected to UL listed
control panel series.
mm(in)
There is a danger of electric shock due to the presence of high voltage (AC250V).
Never touch the terminals while the power is on. Make sure to turn off the high
voltage AC power supply before commencing wiring work.
WARNING
ZETA ALARMS LIMITED
72-78 MORFA ROAD, SWANSEA, SA1 2EN
http://www.velocitydetection.com
Do not use the products outside the rated power supply voltage range
specified in the Specifications. It may cause a fire or damage to
equipment.
CAUTION
!
Do not disassemble, repair, or modify the products. It may cause a fire or
electric shock.
CAUTION
!
Make sure to turn the power off before commencing any wiring work.
Otherwise it may cause electric shock or damage to equipment.
CAUTION
!
