DVTEL ioimage mmp100dn, Руководство по установке, Страница: 24 / 35

mmp100dn Installation Manual
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To connect an external alarm to the unit
1.
Connect the leads from the external device dry contact output, using the spring clamp terminal
block into the terminal contacts marked - (Alarm In) and + (Alarm In). See Connecting Leads to
a Spring Clamp Terminal Block (page 19).
2.
Connect the other end of the cable to the alarm out (dry contact) of the alarming
device/sensor.
3.2.9 Connecting the Unit to Control an External Device (Using Relay Outputs)
The relay output of the unit provides an indication signal for controlling external devices, such as door locks
and lights as a response to events and alerts. For more information on incident responses and relay
outputs, refer to the
HTML Edition Units User’s Guide .
Relay Output Specifications
• Maximum current 1A @ 24 VDC
Relay Contact Schematic
Figure 11: Relay Contact Schematic

NC : Terminal for connecting one of a pair of wires that leads to an external device on a circuit
configured for NORMALLY CLOSED

C : Terminal for connecting the second of a pair of wires for the COMMON lead of an external
device regardless of whether the device is operated in a NORMALLY OPEN or NORMALLY CLOSED
configuration

NO : Terminal for connecting one of a pair of wires that leads to an external device on a circuit
configured for NORMALLY OPEN
A relay output terminal has two options for connecting a device:

Option 1 is for a NORMALLY CLOSED configuration.

Option 2 is for a NORMALLY OPEN configuration.
The relay output supports opto-isolated signal for a single external device. Signals can be sent as
continuous (ON/OFF) or single pulse of predefined duration.
To connect a device controller to the unit’s relay output
1.
Connect the leads from the external device controller to the respective terminal points on the
spring clamp terminal block according to your requirements. See Connecting Leads to a Spring
Clamp Terminal Block on page 19 in the Appendix. The three terminal points for the relay
output are located at the bottom left of the terminal block.
2.
Insert the terminal block into the RELAY port on the back panel of the mmp100dn. See Figure 3:
mmp100dn Back Panel (page 3).
3.
Connect the other end of the cable to the external device, which receives the signal from the
unit and controls/powers the external device.