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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: 610-796-5954
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
V
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Model 12578-002 Monitored Input Module (MIM) Page 2 of 12
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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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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Model 12578-002 Monitored Input Module (MIM) Page 5 of 12
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. Ea ch 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: D eactiv ate 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.
Mode 1: IDC Line Supervision Multiple Switch
In this mode any number of normally- open dry contact clos ures may b e i nsta lled o n the l ine. T he loop is
monitored for ground faults and open circuits in Mode 1. The end-of-line device is a 20 kΩ, 5% tolerance
resistor.
Figure 2. ID C Line Superv ision M ultip le Switch
N
OTE: The 20 kΩ, 5% tolerance resistor is not included with the MIM. This resistor is included in a kit
(12509-003), which must be ordered separately.
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Model 2: IDC Single Normally-Open (N.O.) Switch
In this con f igur atio n, only one normally- open dry co ntact closure may be i nstal led p er sup ervised li ne. In
this mode, the loop is mo nitored f or op e n c ircuits, w ire-to-wire short c ircuits (across + and -) , and ground
faults. When the contact closure is not active (open), the loop appears as 20.1 kΩ load (15 kΩ in series
with 5.1 kΩ). This appears on the input to the MIM and indicates a healthy loop. When the contact
closure is active (closed), the 15 kΩ resistor is bypassed.
Figure 3. IDC Single Normally-Open Switch
The circuit then sees only the 5.1 kΩ load. This changes the value of the input and indicates to the MIM
that the conta c t closu re is active. If there is a s hort ac ross + and -, if e ither leg is grou n ded, or if a break
occu rs on either leg, the M I M indicates that a f a ult has occurred.
N
OTE: The terminating resistors are not included with the MIM. These resistors are included in a kit
(12509-003) that must be ordered separately.
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Mode 3: IDC Single Normally-Closed (N.C.) Switch
In this con f igur atio n, only one norma lly- c lose d dry cont act c l osure may be i nstal led p er sup ervised li ne.
In this mode, the loop is mon itored for open c i rcuits, wire-to-wire short c i rcuits (across + a nd - ), a nd
ground faults. When the contact closure is not active (closed), the 15 kΩ is bypassed and the circuit sees
only the 5.1 kΩ load.
Figure 4. IDC Single Normally-Closed Switch
When the c ontact clos ure is active ( open), the loop appears as a 20.1 kΩ load (15 kΩ in series with 5.1
kΩ). This changes the value of the input and indicates to the MIM that the contact closure is active. If
there is a short a c ross + and -, if e i ther leg is grounded, or if a break occurs on e ither leg, the MIM
indicates that a fault has occurred.
N
OTE: The terminating resistors are not included with the MIM. These resistors are included in a kit
(12509-003) that must be ordered separately.
Mode 4: IAC Line Supervision
(Reserved for 12579-002 Monitored Relay Module)
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Mode 5: I DC Non-Su pervisi on Multipl e Switch (Dry Conta ct)
In this mode, a ny numb er of n orma lly-open dry co ntact closures can b e insta lled on the line. The loop
will not
be monitored for any faults in Mode 5.
Figure 5. IDC Non- Supervis ion Mu ltiple Swit ch (Dry Contact)
Mode 5: I DC Non-Su pervisi on (Wet Cont act)
In this wet contact mode, shorting jumpers for each input must be moved from the factory default of
“dry” to “wet” contact mode. When in “wet” contact mode, the input can be activated during a 0 V
condition or a 24 V condition. The factory default setting is “24 V dc input when active” (position 2-3).
If “0 V dc input when active” is desired, move jumper from position 2-3 to position 1-2. The loop will
not
be monitored for any faults in Mode 5. Ensure the polarity of input connection is correct as it is
polarit y sensitive.
Figure 6. IDC N on- Supervision ( Wet C ontact)
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Table 1. Jumper Settings for Mode 5 Input Operation
Input No.
Dry Contact
Input Selection
1 P1 – Pins 2 & 3
P2 – Pins 2 & 3
P3 – Pins 2 &3
2 P4 – Pins 2 & 3
P5 – Pins 2 & 3
P6 – Pins 2 & 3
3 P7 – Pins 2 & 3
P8 – Pins 2 & 3
P9 – Pins 2 & 3
4 P10 – Pins 2 & 3
P11 – Pins 2 & 3
24 V DC Wet Contact Input
Selection
P1 – Pins 1 & 2
P2 – Pins 1 & 2
0 V dc – Active: P3 – Pins 1 & 2
24 V dc – Active: P3 – Pins 2 & 3
P4 – Pins 1 & 2
P5 – Pins 1 & 2
0 V dc – Active: P6 – Pins 1 & 2
24 V dc – Active: P6 – Pins 2 & 3
P7 – Pins 1 & 2
P8 – Pins 1 & 2
0 V dc – Active: P9 – Pins 1 & 2
24 V dc – Active: P9 – Pins 2 & 3
P10 – Pins 1 & 2
P11 – Pins 1 & 2
Factory Default
Setting
P1 – Pins 2 & 3
P2 – Pins 2 & 3
P3 – Pins 2 & 3
P4 – Pins 2 & 3
P5 – Pins 2 & 3
P6 – Pins 2 & 3
P7 – Pins 2 & 3
P8 – Pins 2 & 3
P9 – Pins 2 & 3
P10 – Pins 2 & 3
P11 – Pins 2 & 3
P12 – Pins 2 & 3
5 P13 – Pins 2 & 3
P14 – Pins 2 & 3
P15 – Pins 2 & 3
6 P16 – Pins 2 & 3
P17 – Pins 2 & 3
P18 – Pins 2 & 3
7 P19 – Pins 2 & 3
P20 – Pins 2 & 3
P21 – Pins 2 & 3
8 P22 – Pins 2 & 3
P23 – Pins 2 & 3
0 V dc – Active: P12 – Pins 1 & 2
24 V dc – Active: P12 – Pins 2 & 3
P13 – Pins 1 & 2
P14 – Pins 1 & 2
0 V dc – Active: P15 – Pins 1 & 2
24 V dc – Active: P15 – Pins 2 & 3
P16 – Pins 1 & 2
P17 – Pins 1 & 2
0 V dc – Active: P18 – Pins 1 & 2
24 V dc – Active: P18 – Pins 2 & 3
P19 – Pins 1 & 2
P20 – Pins 1 & 2
0 V dc – Active: P21 – Pins 1 & 2
24 V dc – Active: P21 – Pins 2 & 3
P22 – Pins 1 & 2
P23 – Pins 1 & 2
P12 – Pins 2 & 3
P13 – Pins 2 & 3
P14 – Pins 2 & 3
P15 – Pins 2 & 3
P16 – Pins 2 & 3
P17 – Pins 2 & 3
P18 – Pins 2 & 3
P19 – Pins 2 & 3
P20 – Pins 2 & 3
P21 – Pins 2 & 3
P22 – Pins 2 & 3
P23 – Pins 2 & 3
P24 – Pins 2 & 3
0 V dc – Active: P22 – Pins 1 & 2
24 V dc – Active: P22 – Pins 2 & 3
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P24 – Pins 2 & 3
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Model 12578-002 Monitored Input Module (MIM) Page 10 of 12
Operation
The operation of the Model 12578-002 MIM is controlled by the MCU configuration. See the MCU
configuration details in the system manual for all operation information.
Software Configu ration
69248-xxx Jumper must be removed from P1 to operate in a MIM configuration.
How to Diagnose As sembly/Model Faul ts
Symptom Action
MIM does not
communicate
with MCU
MIM does not
rec ognize dr y
inputs
MIM does not
activate an
alarm with 24 V
dc ap plied to
input terminal.
(Wet contact
mode ONLY.)
• Verify power is applied to the MIM.
• Verify RS-485 is connected to the MIM.
• Verify RS-485 is properly terminated at the last device in the RS-485 link.
• Veri fy addres s of MIM agrees with t he setup co nfigu rat ion.
• Ensure CPU PCBA is correctly connected via J2.
• Call for service of the MIM.
• Verify total loop resistance is less than 100 Ω.
• Verify power is applied to the MIM.
• Verify RS-485 is connected to the MIM.
• Verify RS-485 is properly terminated at the last device in the RS-485 link.
• Veri fy end of line resistor(s) properly insta lled on each input circuit.
• Call for service of the MIM.
• Verify that the jumper that selects the proper “_ V dc when active” mode is in
the correct position for the desired mode. Refer to Mode 5- IDC NonSupervision (Wet Contact) information.
• Verify that the applicable input jumpers have been repositioned for WET
operation.
• Verify that the input is within the acceptable dc voltage range (20–30 V dc)
• Verify that the proper voltage polarity has been observed for external
connections to the input terminals.
• Call for service of the MIM.
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Specification s
Electrical
Power requirements..................................................................................... 9–15 V dc (12 V dc nominal)
Current draw ................................................................. 300 mA maximum @ 12 V dc (no ground faults)
Number of input loops................................................................................................................... 8 loops
Maximum devices on input loop................................................................................. Unlimited (Mode 1)
1 (Mode 2)
1 (Mode 3)
Unlimited (Mode 5 - Dry)
1 (Mode 5 – Wet)
Input/output................................................................................................................................. Power in
Power out
RS-485 in
RS-485 out
8 field inputs
Data communications....................................................................................................................RS-485
RS-485 termin ation........................................................................ On board when P2 jumper is installed
End-of-line device........................................................................................................... 20 kΩ (Mode 1)
5.1 kΩ in series with 15 kΩ across contact (Mode 2)
5.1 kΩ in series with 15 kΩ across contact (Mode 3)
None (Mode 5)
Field Inputs
Mode 1:
Contact closure resistance (activated)............................................................................... 1 kΩ maximu m
Open Fault Detection....................................................................................................... Minimum 65 kΩ
Ground Fault Detection....................................................................................Less than 200 Ω to ground
Modes 2 and 3:
Contact closure resistance (Mode 2: activated/ Mode 3: de-activated)............................... 3 kΩ max imum
Open fault detection ........................................................................................................ Minimum 65 kΩ
Ground fault detection...................................................................................... Less than 200 Ω to ground
Wire-to-wire short fault detection.....................................................................................Less than 200 Ω
Mode 5 (Dry)
Contact closure resistance............................................................................................... 900 Ω maximu m
Mode 5 (Wet)
DC input voltage range...............................................................................20–30 V dc (24 V dc nominal)
Limitations:
Cable limitations .................................................................................... 100 Ω maximum lo o p resistance
Terminals:
Minimum conductor size...................................................................................... No. 28 AWG (0.5 mm
Maximum conductor size...................................................................................... No. 12 AWG (3.0 mm
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2
2
)
)
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Mechanical
Unit dimensions ...................................... 4.00 H × 10.5 W × 1.250 D inches (101.6 × 266.7 × 31.75 mm)
Unit weight .................................................................................................................. 1.00 lb. maximum
Environmental
Temperature range (operating/storage).................................................. -30° C to 70° C (-22° F to 158° F)
Humidity ....................................................................................... 95% non-condensing relative humidity
Replaceme nt Parts
Model No. Description
69248-xxx CPU PCBA
69251-xxx Monitored In 8 PCBA
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