GAI-Tronics 12578-003 User Manual
Pub. 42004-715L2C
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
Model 12578-003
Monitored Input Module (MIM)
Confidentiality 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.
How to Use the Assembly/Model
Application
The 12578-003 Monitored Input Module (MIM) is used in SmartSeries ADVANCE systems.
GAI-Tronics uses the MIM to receive inputs from field devices, monitor the integrity of eight input lines
for trouble conditions or contact activation, and report these conditions to the 69254 Series or
69440 Series Master Control Unit (MCU). The MIM is comprised of two components: the 69613-001
Central Processing Unit (CPU) printed circuit board assembly (PCBA) and the 69251-201 MonitoredIn-8 PCBA.
The MIM is designed to be mounted in a Snaptrack that is installed inside an enclosure. Snaptrack is a
grooved plastic channel that is designed to allow PCBAs to securely ‘snap’ into the groove. The
Snaptrack provides flexible installation because the track may be installed inside an enclosure wherever it
is convenient.
The module communicates with the MCU via the 69613-001 CPU PCBA over a FSK modem intended
for use in GAI-Tronics SmartSeries systems. The CPU PCBA interprets and reports the status of the
inputs. The MIM is capable of monitoring up to eight inputs. The MCU identifies a particular MIM on
the page line (FSK link) by its module address. This module address is set by rotary hex switches S1 and
S2 of the MIM (located on the CPU PCBA.) The range of valid settings is from 05 to FE (hex).
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
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ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
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Each input may be independently configured to operate in one of the following five modes:
Input
Mode Description
Comments
0 Deactivate circuit Input is not monitored.
1 IDC line supervision
multiple switch
Detects open circuit, ground faults, and switch actuation from one or
more normally-open dry contact closures.
2 IDC single N.O. switch Detects open circuit, wire-to-wire short circuit, ground faults, and
switch actuation from a single normally-open dry contact closure.
3 IDC single N.C. switch Detects open circuit, wire-to-wire short circuit, ground faults, and
switch actuation from a single normally-closed dry contact closure.
4 IAC line supervision Reserved for 12579-003 Monitored Relay Module
5 IDC non-supervised N.O.
dry switch
5 IDC non-supervised, wet
switch
Detects a switch actuation from one or more normally-open dry
contact closures.
Detects the presence or absence of 24 V dc voltage depending on
applicable onboard jumper settings.
In order to utilize a particular input mode with a particular input, the appropriate external connections
must be made between the MIM and the field devices. Also, the input modes must be added to the MCU
Configuration using the ADVANCE Console System Configuration Software. Refer to the “Installation
Guidelines” section on page 4 for further details.
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Hardware Configuration
Figure 1. Model 12578-003 Monitored Input Module
Interfaces
The Model 12578-003 Monitored Input Module interfaces to a Page/Party® Interface (PPI) card in the
ADVANCE control cabinet via the system page line (FSK link).
Installation Safety Guidelines
Please adhere to all warnings, safety, and operating instructions on the unit and in the installation manual.
DANGER
Disconnect power before servicing
Do not disconnect equipment while circuit is energized.
Avoid servicing the unit during electrical storms.
Do not touch uninsulated wires.
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Model 12578-003 Monitored Input Module (MIM) Page 4 of 12
Installation Guidelines
1. Notify plant personnel of a system shutdown prior to servicing the unit.
2. Disconnect power before installing or removing the MIM.
Mounting
To install the module into the Snaptrack slide either the right or the left edge of the module into the top
groove on the track. On the opposite side, press firmly on the top and bottom corners of the module until
they snap into the groove. Carefully press from each corner toward the center and simultaneously snap
the edge firmly into place.
Power
After the PCBA is installed onto the Snaptrack, 12 V dc power is brought in from the auxiliary power
supply and terminated on TB9 (PWR IN). The positive leg is connected to TB9-1 (+) and the return leg is
landed on TB9-2 (−). An earth ground is connected to TB9-3 (EGND). TB9 is paralleled with TB10.
TB10 (PWR OUT) may be used to distribute power to additional Snaptrack modules.
OTES:
N
Although power may be daisy-chained between MIMs and other Snaptrack modules, the preferred
method of delivering power to these modules is by providing a dedicated cable run between each
module and the auxiliary power supply.
The auxiliary power supply return leg must be connected to earth ground for proper operation. The
physical connection should be made at the auxiliary power supply terminals.
The ground reference for this assembly must be identical to that of the enclosure.
The MIM does not contain any current-limiting for power. It is recommended that an external fuse be
provided with the appropriate voltage and current ratings. The selected fuse should be of the slo-blo
variety.
Data Communication Line
Terminal blocks TB11 and TB12 are for the page line connection (FSK data communication) from the
PPI card and to additional MIM and MRM modules.
OTE: The conductor terminated on TB12 should be a twisted pair.
N
FSK Signal Gain
The FSK Signal Gain, R8, adjusts the FSK transmit signal strength. It is set at the factory and should not
be adjusted by the installer.
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