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Configured for distributed I/O rack expansion in Series 90-30 platforms, the GE IC693CHS393 (IC693CHS393 10-slot Remote Baseplate) provides direct physical/electrical execution. The unit provides ten I/O slots and a dedicated power supply slot to process discrete, analog, and option modules over extended bus distances up to 700 feet from the primary CPU rack.

Hardware Specifications

Parameter Specification
Model IC693CHS393
Brand GE Fanuc Emerson
Series Series 90-30
Product Type Remote Baseplates
Total Slots 10 I/O slots plus 1 dedicated power supply slot
CPU Slot None (Remote non-CPU baseplate)
Backplane Operating Voltage 5 VDC
Internal Power Consumption 460 mA at 5 VDC
Maximum Expansion Distance 700 feet total system expansion cable length
Expansion Interface Connector 25-pin D-shell female connector
System Baseplate Capacity Up to 4 baseplates (CPU 331/340/341); Up to 7 baseplates (CPU 350+)
Hardware Configuration Rack number selection DIP switches
Module Restrictions Incompatible with PCM, ADC, BEM330, and CMM modules
Mounting Method Panel mounting
Operating Temp 0 to +60 deg C
Dimensions 17.44 x 5.12 x 5.59 in (443 x 130 x 142 mm)
Weight 2.13 kg (4.69 lbs)
Origin USA

Backplane Bus Interfacing and Deterministic Networks

The IC693CHS393 baseplate routes backplane communication signals via a 25-pin D-shell expansion port, extending the parallel rack bus to remote I/O locations. Backplane bus communication velocity and signal integrity are maintained through integrated hardware isolation circuits designed to suppress ground loop potential differences across long cable runs. Rack addressing is governed by on-board DIP switches, ensuring deterministic data exchange and firmware flash compatibility between connected I/O modules and the host CPU across multi-rack topologies.

Frequently Asked Questions

Q: What is the maximum cable distance supported between the host CPU baseplate and the IC693CHS393?

A: The total cumulative expansion cable length across all interconnected expansion and remote baseplates must not exceed 700 feet.

Q: Can option modules like the PCM, ADC, or CMM be installed in the IC693CHS393 remote baseplate?

A: No, coprocessor and communication modules such as PCM, ADC, BEM330, and CMM must be installed strictly in the CPU primary baseplate.

Q: How is the remote rack address set on the IC693CHS393 hardware?

A: Rack numbers are configured directly on the chassis using the integrated DIP switch block located near the expansion connector.

Field Installation Guidelines

  1. Remove primary AC/DC power from the entire PLC chassis and remote power supply before installing or mounting the baseplate.
  2. Fasten an ESD grounding wrist strap to a bare metal enclosure ground point before handling internal baseplate connectors or modules.
  3. Secure the metal panel baseplate firmly to the enclosure backplane using appropriate screws through the mounting tabs.
  4. Set the rack selection DIP switch to the unique assigned rack address for the expansion chain.
  5. Connect the 25-pin expansion cable to the female D-shell port on the right edge of the unit, verifying that cable shield drains are terminated to panel ground.

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