The GE IC200MDL650, also cataloged as the IC200MDL650 Discrete Input Module, operates as a dedicated hardware component for 24 VDC discrete signal acquisition within GE VersaMax I/O systems. Incorporating 32 input channels divided into 4 isolated groups of 8 channels each, the module receives binary field signals from switches, pushbuttons, and proximity sensors in either positive or negative logic configurations. The hardware processes input signals across a 0 to 30 VDC voltage envelope, providing selectable digital filter delays of 0 ms, 1.0 ms, or 7.0 ms to eliminate field contact bounce before transmitting state data to the host controller via the backplane.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC200MDL650 |
| Brand | General Electric |
| Origin | USA |
| Weight | 0.31 kg |
| Dimensions | Standard VersaMax Carrier Profile |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 50 mA maximum @ 5 VDC (Backplane draw) |
| Module ID | 80088008 |
| Input Channels | 32 Discrete Inputs (4 isolated groups of 8) |
| Nominal Voltage | 24 VDC |
| Operating Voltage Range | 0 to 30 VDC |
| On-State Voltage | 15 to 30 VDC |
| Off-State Voltage | 0 to 5 VDC |
| On-State Current | 2.0 to 5.5 mA |
| Off-State Current | 0 to 0.5 mA |
| Input Impedance | 10k Ohms |
| Hardware Response Time | 0.5 ms maximum |
| Configurable Filter Times | 0 ms, 1.0 ms (default), 7.0 ms |
| Isolation | 250 VAC continuous group-to-group (1500 VAC for 1 min); No channel-to-channel isolation within groups |
| Status Display | 32 individual channel LEDs, 1 backplane OK LED |
I/O Density Scaling & Backplane Bus Integrity
The IC200MDL650 scales channel density within the VersaMax form factor while maintaining minimal backplane current loading at 50 mA. The module communicates with the CPU or network interface unit across the backplane bus, enabling high communication velocity and deterministic input scanning. Configurable hardware filter parameters allow tuning for noise suppression without sacrificing I/O update times over expanded network drops. Full firmware flash compatibility allows online parameter updates and live module substitution on active I/O carrier bases without interrupting adjacent rack operations.
Frequently Asked Questions
Q: Does the IC200MDL650 require an external 24 VDC power supply connection for module logic?
A: No. Internal logic circuitry and backplane bus processing power are derived entirely from the 5 VDC backplane supply (50 mA maximum draw). Field power drives the input loops.
Q: Can channels within the same group be wired using different power sources?
A: Channels within an 8-point group share a common return reference terminal. Different power sources can be used across separate groups due to the 250 VAC group-to-group galvanic isolation, but all 8 channels in a single group must share the same voltage reference.
Q: What is the purpose of setting the input filter time to 0 ms?
A: Selecting a 0 ms filter time yields the fastest hardware response (0.5 ms maximum) for high-speed signal capture, whereas the default 1.0 ms or 7.0 ms settings provide filtering for mechanical contact bounce.
Field Installation Guidelines
-
Safety Shutdown: Isolate all power sources supplying the VersaMax carrier base and field devices before installing or removing the module.
-
Carrier Alignment: Align the IC200MDL650 module with the guide slots of the designated I/O carrier base. Seat the module firmly into the backplane connector until both side latches click into place.
-
Wiring Connections: Terminate 24 VDC input signals and group commons on the carrier terminal strip. Verify that sink/source logic polarities match the intended field device wiring scheme.
-
Noise Prevention: Keep low-voltage DC input signal wiring segregated from high-voltage AC lines and variable frequency drive output cables to prevent electromagnetic coupling into the 10k Ohm input circuits.
- Orientation & Clearance: Ensure adequate vertical clearance around the DIN-rail mounting base for thermal convection, whether mounted in horizontal or vertical orientation.
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