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IC693MDL742 Wiring

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  • IC693MDL742
  • IC693MDL742 Wiring

Product Description

The GE Fanuc IC693MDL742 is a 12/24 volt DC Positive Logic 1 Amp Electronic Short Circuit Protection (ESCP) Output module. Made to work with the Series 90-30 PLC, this ESCPP module has a total of 16 output points. These points are arranged in two individual banks of eight. There is a common power output terminal shared by the points of each group. By design, this output module has positive logic characteristics. This means it sources current from either the user common or else the positive power bus, directing it to the load.

Among the load devices that are compatible with the output characteristics of this module are solenoids, indicators and motor starters. Output devices like these must be connected between the negative power bus and the module output. The user must supply external power to operate the field devices. On top of the ESCP module there are two rows of LED indicators. These show the ON/OFF status of each one of the output points. Each green LED corresponds to the relative output point. Row A1 has the LED indicators for outpoints points 1 to 8, while row B1 is for output points 9 to 16.

Centered between the two rows is a single red LED, labelled “F”. This is a tripped electronic short circuit protection indicator. Whenever any short circuit protection trip happens, this LED will turn on. The common signal for each group is monitored electronically. If a short circuit occurs in the power supply, the output points in that group will turn off and the red LED will turn on.  Users must be aware that the protection does not prevent individual outputs from exceeding their ratings. It will only protect the board in the event of a short-circuited load. The module has two electronic short circuit protection circuits.

Each circuit protects eight outputs - the first circuit protects outputs A1 - A8, while the second circuit protects outputs B1 - B8. In order to reset the electronic short circuit protection, users must remove the 12/24 VDC user supply that is connected to the module. This unit has a small door, which opens and closes on a hinge.  Whenever this door is closed over, an insert passes through the crevice. The side of the insert on the inside of the door contains circuit wiring information. The outer surface allows for recording of circuit identification information. This is a low-voltage module, which is evident by the blue strip on the edge of the insert. The ESCP module has no fuses. Users can install this particular module in a Series 90-30 PLC system. It is possible to do this in any I/O slot of either a 5-slot or 10-slot baseplate.

Technical Specifications

Rated Voltage: 12/24 volts DC
# of Outputs: 16
Freq: n/a
Output Current: 1.0 A per point
Output Voltage Range:  12 to 24 volts DC (+20%, -15%)
DC Power: Yes


GE Intelligent Platforms / GE Fanuc GE Series 90-30

SKU 2171459  UPC 0561868596123

Part Number: IC693MDL742 / ic693mdl742
Mfr/Brand Name: GE Automation
Mfr Number: IC693MDL742 / ic693mdl742
Type: 12/24 volts DC 1 Amp Pos. Logic Output Module, 16 Output Pts

Technical Specifications

      Troubleshooting and Product Information for IC693MDL742

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      1C693MDL742 , GEFIC693MDL742 , CIMIC693MDL742


      Rated Voltage

      12/24 volts DC

      Output Voltage Range

      12 to 24 volts DC (+20%, –15%)

      Outputs per Module

      16 (two groups of eight outputs each)


      1500 volts between field side and logic side


      500 volts between groups

      Output Current t

      1 amp maximum per point

      4 amps maximum per group at @ 50 °C


      3 amps maximum per group @ 60 °C

      Output Characteristics


      Inrush Current

      5.2 amps for 10 ms

      Output Voltage Drop

      1.2 volts maximum

      Off-state Leakage

      1 mA maximum

      On Response Time

      2 ms maximum

      Off Response Time

      2 ms maximum

      Power Consumption

      130 mA (all outputs on) from 5 volt bus on backplane

      Troubleshooting IC693MDL742

      Troubleshooting information is available on IC693MDL742’s website page; it also includes a datasheet user-manual and a wiring diagram.  


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      16 Point Positive Logic ESCP Output Module with Electronic Over Current Trip at Power Up


      SERIES 90-30 12/24 Vdc, 1A, 16 Point Positive Logic ESCP Output Module may experience Electronic Over Current Trip at power up when relays and/or contactors are used to apply user power to the module part number IC693MDL742.

      Some users have experienced erroneous electronic over current trips (red "F" LED on and output points disabled for one or both groups) on power up when relays and/or contactors are utilized to apply user (field) power to the module referenced above.

      GE has determined that some contact bounce scenarios produced by certain user supplied relays and/or contactors utilized to apply external user (field) power to the module can cause the module's internal current sense op-amp to respond unpredictably upon power up and produce an erroneous electronic over current trip. The likelihood of experiencing this issue varies with the op-amp make and vintage of manufacture. Not all MDL742s exhibit this issue. These trips are a nuisance issue and should not affect the safety or long term reliability of the module in any way. However, modules experiencing the issue may require one or more user (field) power cycles to clear and allow normal module operation at start up.


      The following recommended action applies only to users that have an IC693MDL742 with one or both output groups exhibiting this issue. GE recommends that affected users install a capacitor across the user I/O terminal strip terminals for the user (field) power input to the module. The amount of capacitance required is dependent upon the severity of the relay and/or contactor bounce experienced. In general, a 47 uF, 35 WVDC capacitor eliminates the issue. The capacitor must be installed on a per group basis (potentially two capacitors per module) if both output groups are exhibiting the issue and each group receives its field power from separate power supply sources. If both groups receive field power from the same power supply source, one capacitor installed on either of the groups? field power input terminals should be sufficient. As shown in the diagram below, assuming a polarized capacitor is selected, for group A, install the positive lead to terminal 1 and the negative lead to terminal 10. For group B, install the positive lead to terminal 11 and the negative lead to terminal 20.


      Customer Questions and Answers

      • Question:  What is an IC693MDL742?  Answer:  The IC693MDL742 is a 12/24 volt DC Positive Logic 1 Amp Electronic Short Circuit Protection (ESCP) Output module for the GE Fanuc Series 90-30. This module provides 16 output points in 2 groups of 8 with a common power output terminal for each group. 
      • Question:  What is this module designed to have?   Answer:  The IC693MDL742 is designed to have positive logic characteristics so that it can source current to the loads from the user common or from the positive power bus.
      • Question:  Where is the output device connected?   Answer:  It is connected between the negative power bus and the module output. 
      • Question:  With what are the output characteristics compatible?   Answer:  They are compatible with motor starters, solenoids, and indicators. 
      • Question:  What kind of power source is needed for the IC693MDL742?   Answer:  The power to operate the field devices must be supplied by the user.
      • Question:  What is the rated voltage?   Answer:  12/24 volts DC
      • Question:  What is the output voltage range?   Answer:  12 to 24 volts DC (+20%, -15%)
      • Question:  What is my next step if my IC693MDL742 is not working?   Answer:  If your IC693MDL742 is not working properly, then your product may need repair

      For more information on the IC693MDL742 DC Positive Logic ESCP Output Module of the GE 90-30 Series, please see the Datasheet Manual.


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