GE IC610MDL112A – Circuit-Board for Series One PLC Memory Expansion

The GE IC610MDL112A provides additional memory storage for Series One programmable controllers. This circuit-board measures 170 mm in width and 120 mm in height. It has a depth of 20 mm, so it fits inside the Series One base unit. The unit weighs 0.12 kg, making installation simple and quick.

Memory Capacity and Storage Technology

This circuit-board adds 4 kB of CMOS RAM to the Series One CPU. The GE IC610MDL112A stores user programs, timers, counters, and data registers. A lithium battery retains memory contents during power-off conditions. The battery provides backup for approximately 2 years of continuous use. The board requires no external programming device for memory expansion.

Internal Architecture and Component Layout

The board contains one large CMOS memory chip and support logic circuits. The GE IC610MDL112A includes address decoding and data buffering components. A 30-pin edge connector interfaces with the Series One backplane. The board draws power directly from the CPU backplane supply. It stores 22 µF of capacitance for power supply filtering only.

Battery Monitoring and Data Protection

The GE IC610MDL112A includes a low-battery detection circuit on the board. This circuit lights an LED when battery voltage falls below safe levels. A write-protect jumper prevents accidental data loss during maintenance. The board automatically switches to battery power when backplane voltage drops. It retains data even when you remove it from the CPU unit.

Compatibility and Environmental Tolerance

This circuit-board works with all Series One CPU models from IC610CPU101 onward. The GE IC610MDL112A operates reliably from 0°C to 60°C ambient temperature. It tolerates humidity levels up to 95 percent without any condensation issues. The unit withstands vibration up to 2g from 10 to 500 Hz. A plastic cover protects the board from static discharge during handling.

Below is a complete summary of its technical specifications.

The GE IC610MDL112A replaces older memory boards in Series One PLC systems. You do not need any special programmer for memory expansion. This board also supports battery replacement without losing stored programs. Consequently, it expands program capacity for larger control applications.