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C. Installing Common Alarm Light
An alarm light must be installed on the front of the enclosure to
indicate when an alarm has occurred. Relay 1 has already been
programmed for this purpose, and must be connected as shown.
If desired, install a push-to-test alarm light and/or interposing
relay and test button.
D. Connect Power and Communication to the NGC-UIT
Power and Earth Ground
1. Connect 100 to 240 VAC ±10% to AC input terminals (Line/L1
and Neutral/L2). Maximum wire size is 2.5 mm²
Ensure that branch circuit breaker does not exceed 15A and is
installed in accordance with local electrical codes.
2. A ground conductor must be terminated at the ground terminal
of the AC Input connector.
NGC-30-CRM,
RMC or RMM
S
S
To next
NGC-30-CRM,
Chassis
RMC or RMM
GRD
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PC
Select either RS-232, RS-485 or
Ethernet. Refer to the NGC-30
Programming Guide (INSTALL-111),
and the NGC-30 Installation Manual
(INSTALL-114) for further details.
RS-485
RS-232
Ethernet
cable
cable
cable
10/100
Ethernet
1
2
3
4
5
6
RS-232
(DCE)
Local
Field
Remote
RS-485 Ports
Note: Relays are shown in the energized position (without an alarm condition).
R
1
2
3
4
5
6
7
8
9
10
11
Relay 1
Communication
Field side port
1. This port is used to communicate with ModBus devices.
Connections to these terminals should be a shielded, twisted
pair cable. (Belden CDT cable 8761 or equivalent, maximum
length is 1200 m [4000 feet]). For more information, refer to
the NGC-30 Programming Guide (Install-111) and the NGC-30
Installation Manual (install-114).
Local port
1. This port is used to communicate to a host computer and is
user selectable for either RS-232, RS-485 or ethernet.
2. If the RS-232 port is utilized, the supplied RJ-11 to RS-232
adaptor cable must be used. For more information, refer to
the NGC-30 Programming Guide (Install-111) and the NGC-30
Installation Manual (install-114).
Note: When using RS-485 communication,
use Belden cable 8761 or equivalent.
RS-485 cable must not exceed 4000 ft.
R
Load
Typical of
Relay 2
1
2
3
4
5
6
7
8
9
10
11
Relay 1
Relay 2
Relay 3
Fail Safe Relay Outputs
Relay 1
230 Vac
Relay 1
Up to
277 V AC
3 Amps
Relay 2
Line/L1
100 to
N/L2
240 V AC
± 10%
1
2
3
AC input
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