GAI-Tronics 378-002 User Manual
Pub. 42004-490A
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
Model 378-002
Monitored Input Module (MIM) Station
Confidential ity Notice
This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics.
GAI-Tronics retains all intellectual property and other rights in or to the information contained herein,
and such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.
General Information
The Model 378-002 Monitored Input Module (MIM) Station is used in SmartSeries ADVANCE systems.
Operation is controlled by the system’s Master Control Unit (MCU) programming.
The MIM monitors up to eight input circuits. Each input circuit is activated by a voltage-free contact
(either opening or closing) or the presence/absence of a 24 V dc input voltage. When using inputs from
voltage-free contacts, the MIM can supervise the cabling between the MIM input terminal and the remote
contact closure device. Each input circuit can be programmed to initiate one of the following functions in
the ADVANCE system.
Activate an alarm
Reset all alarms
Cancel the current alarm
Report a fault condition
Reset the system MCU
The Model 378-002 Monitored Input Module (MIM) Station components are housed in a NEMA 4X
stainless steel enclosure measuring 13.00 W 14.30 H 6.23 D inches. Components include a 12 V dc
power supply, a Model 12578-002 Monitored Input Module, and two terminal blocks.
The 12578-002 Monitored Input Module is comprised of two components: the 69248-102TR CPU and
the 69251-201TR Monitored-Input PCBA. Refer to Figure 1 for component locations.
The scope of this manual is limited to the mounting and wiring connections for the Model 378-002
station. Refer to Pub. 42004-711L2 for additional information on the 12578-002 Monitored Input
Module.
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
V
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
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Figure 1. Model 378-002 MIM Station (Interior View)
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Installation
CAUTION
Do not install this equipment in hazardous areas. Disconnect power before installing or removing
the MIM.
Mounting
The Model 378-002 MIM Station enclosure is not supplied with conduit or cable gland holes since cable
quantity, size, and entry location vary with each installation.
Drill or punch openings at the required locations before mounting the enclosure. Typically, multiple
cables entries are required for power, serial data line, and input wiring. Refer to the “Wiring” section
below. Use caution when drilling or punching the enclosure to avoid damaging the internal components.
Bottom cable entry is recommended to prevent moisture from entering the enclosure and dripping onto
the terminals or circuit boards.
Mount the enclosure to a suitable surface using appropriate customer-supplied hardware. Refer to Figure
1 for mounting hole dimensions.
Remove the shipping tie-wrap that is securing the PCBA to its mounting Snaptrack.
Wir in g
The MIM Station requires 120 V ac power and a serial data line connection (RS-485) to the ADVANCE
system control cabinet. Up to eight activation switches (inputs) are connected as needed. Each
connection is explained below.
Power
120 V ac power is connected to terminal block TB13 at the top of the panel. Refer to Figure 1.
WARNING
Earth grounding provisions are provided.
Function Terminal Block Wire Color
AC Line (hot) TB13-1 Black
Neutral TB13-2 White
Ground TB13-3 Green/yellow
Insure proper grounding to protective earthing.
Table 1.
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Data Communication Line
Terminal blocks TB11 and TB12 are for “feed-thru” connection of the RS-485 data cable. The data cable
should consist of a twisted pair with shield. One end of the data cable must be terminated to the
ADVANCE System Control Cabinet. A total of ten MIM and MRM modules can be parallel wired to the
data cable. The most distant MIM or MRM should have a termination resistor installed across the data
line by installing jumper P2 on the 69248-xxx CPU PCBA.
CAUTION
The RS-485 line is polarity-sensitive. Be sure to maintain circuit polarity throughout installation.
OTES:
N
Only one termination resistor should be installed across the RS-485 data line. Be sure jumper P2 is
installed on only the most distant MRM or MIM.
Address Setting
Each MIM and MRM on the RS-485 data line must be set with a unique hardware address. Consult the
System Administrator for the proper address prior to setting the address switch on the MRM or MIM.
Addresses for each module are determined by the System Administrator’s software configuration of the
ADVANCE system. The address is set using the hexadecimal switch on the 69248-xxx CPU PCBA.
Valid addresses are 5-F.
Inputs
The MIM contains eight individually configurable inputs, allowing it to interface with field devices.
Connections with these field devices are made at connectors TB1 through TB8. Each connector
corresponds to a single input (TB1 is used for input #1, TB2 is used for input #2, etc.) Each one of these
inputs may be configured to operate in one of five input modes.
Each input mode requires a unique connection scheme between the external field devices and the
appropriate input connector on the MIM. The connection scheme for each input mode is indicated below.
Since the connection scheme is independent of which input is used, only input #1 will be discussed.
To ensure proper termination, ferrules must be crimped on the end of all conductors that are terminated on
the terminal blocks. The size of the ferrule is dependent upon the size of the conductor used and may be
sourced from any supplier such as Phoenix, Altec or Weidmuller. The terminal blocks may accept
conductors between sizes No. 28 AWG to 12 AWG.
Mode 0: Deactivate Circuit
In this mode, input #1 is not used and is not monitored by the MIM. If this mode is used, no external
connections should be made to connector TB1.
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