GAI-Tronics 12578-002 User Manual

Pub. 42004-711L2B

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Model 12578-002

Monitored Input Module (MIM)

Confidentiality Notice

This manua l is provide d sole ly as an operatio nal, installation, and ma inte nance guide and conta ins
sensitive business and t e chnical informatio n tha t is confidentia l and pr opri et ary 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 manu al may not be dis clos e d in any form, in whole or in pa rt, direct ly or i ndir ectly, to a ny
third pa r ty.

How to Use the A ssembly/Model

Application

The 12578-002 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 69248-xxx
Central Processing Unit (CPU) printed circuit board assembly (PCBA) and the 69251-xxx Monitored­In-8 PCBA.

The MIM is designed to be mounted in a Snaptrack that is then installed in an equipment rack. 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 a rack wherever it is
convenient.

The module communicates with the MCU via the 69248-xxx CPU PCBA over an RS-485 link. The CPU
PCBA interprets and reports the status of the inputs. The MIM is capable of monitoring up to eight
inputs.

GAI-Tronics Corporation 400 E. Wyomissing Av e. Mohnton, PA 19540 USA

610-777-1374  800-492-1212  Fax: [phone]

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
mult ip le swit ch

2 IDC single N.O. switch

Dete c ts open cir c uit, grou nd faults, and s witc h actu a tion from one or
more normal l y- op e n dr y co nt a ct closu res.

Dete c ts open circu it, wire-to-w i re short c i rcuit, ground f aults, and
swit ch actuat ion from a sin gle n ormally-open dry co ntact clos ure.

3 IDC single N.C. switch

Dete c ts open circu it, wire-to-w i re short c i rcuit, ground f aults, and

switch actuation from a single normally-closed dry contact closure.
4 IAC line supervision Reserved for 12579-002 Monitored Relay Module
5

IDC non-supervised N.O.
dry switch

5

IDC non-supervised, wet
switch

Dete c ts a swit ch ac tuation from one or more normally-open dry

contact closu res.

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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Model 12578-002 Monitored Input Module (MIM) Page 3 of 12

Hardware Configuration

Figure 1. Model 12578-002 Monitored Input Module

Interfaces

The Model 12578-002 Monitored Input Module interfaces to an Amplifier Zone Interface via the RS-485
link.

Installa tion Safety Gui delines

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 12578-002 Monitored Input Module (MIM) Page 4 of 12

Installa tion 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 equipment rack
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.

The equipment rack power supply is not part of the 10457 Series Card Rack Assembly. The card rack
power supply is not used to provide power to the Snaptrack modules. An additional power supply must
be included in the cabinet to support these modules.

Connect the return leg of the power supply to earth ground at the supply terminals. N

OTE: The ground

reference for this assembly and the card rack must be identical.

Data C ommunicat ion Line

Terminal block TB12 has been provided to distribute the RS-485 data communication line to additional
Snaptrack modules. If there are no additional Snaptrack modules, connect a 47207-151 150-ohm, ½ watt
terminating resistor (sold separately) across TB12 of the 69251-xxx, or install a jumper across the pins of
P2 on the 69248-xxx CPU PCBA.

CAUTION

The RS-485 line is polarity-sensitive. Be sure to maintain circuit polarity throughout installation.
N

OTES:

1. The conductor terminated on TB12

should be a twisted pair.

2. Only one termination is to be applied to an RS-485 circuit - either a 150-ohm resistor across TB12, or

a jumper across the pins of P2 on the 69248-xxx CPU PCBA.

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