GE IC693MDL740G Output Module

This output module provides discrete triac output capability for GE Series 90-30 PLC systems. It switches AC loads such as contactors, solenoids, and indicator lights. Therefore, it enables reliable control of industrial machinery in AC-powered applications.

Physical and Output Specifications

The GE IC693MDL740G measures 12.5 cm in length and 9.0 cm in width. Moreover, its module weight equals approximately 0.28 kg for rack mounting. A single 20-pin removable terminal block handles all field wiring connections. Additionally, this module contains eight independent triac output channels.

Parameter	Specification
Brand	General Electric (GE)
Full Model	IC693MDL740G
Category	Output Module (Triac)
Dimensions (L x W x H)	12.5 cm x 9.0 cm x 5.5 cm (4.92″ x 3.54″ x 2.17″)
Module Weight	0.28 kg (0.62 lbs)
Primary Interface	1 x 20-pin Removable Screw Terminal Block
Backplane Interface	1 x 48-pin Male Connector (Series 90-30 Rack)
Output Channels	8 Independent Channels
Output Type	Triac (Zero-Crossing Switching)
Output Voltage Range	24 to 264 VAC (47 to 63 Hz)
Output Current per Channel	2.0 A (Continuous), 3.5 A (1 Second Surge)
Total Output Current	6.0 A Maximum (All Channels Combined)
Output Leakage Current	2.5 mA (Maximum at 264 VAC)
Output On-State Voltage Drop	< 1.5 Vrms at 2.0 A
Output Response Time (On)	0.5 AC Cycle + 1 ms (Typical)
Output Response Time (Off)	0.5 AC Cycle + 1 ms (Typical)
Output Protection	Snubber Circuit (47Ω + 0.1 µF)
Switching Frequency	10 Hz Maximum
Minimum Load Current	50 mA
On-Board Components	8 Triacs + 8 Optocouplers + 8 Snubber Circuits + 4 Protection Diodes + 1 Voltage Regulator + 1 LED Driver IC + 1 EMI Filter
Energy Storage	2 x 47 µF Electrolytic Capacitors (35V) + 2 x 10 µF Tantalum (25V)
Operating Voltage	+5 VDC from Backplane (0.3 A Typical)
Power Consumption	1.5 W (Typical)
Isolation Rating	2500 Vrms (Field to Backplane)
Operating Temperature	0°C to +60°C (32°F to 140°F)
Mounting Type	Series 90-30 PLC Rack (Single Slot)
Status Indicators	8 Green LEDs (One per Channel) + 1 Green LED (Power)

Triac Output Features and AC Switching

The GE IC693MDL740G uses zero-crossing triacs for AC output switching. Specifically, the module turns loads on at the AC voltage zero crossing point. In addition, this design minimizes electrical noise and inrush current. Moreover, each channel delivers 2.0 amps continuously at 264 VAC. Furthermore, built-in snubber circuits protect the triacs from inductive load spikes. Consequently, this module provides reliable AC switching for contactors and solenoids.

Output Protection and Noise Reduction

Each output channel includes comprehensive protection for reliable operation. For instance, snubber circuits (47Ω resistor + 0.1 µF capacitor) suppress voltage transients. In addition, optocoupler isolation provides 2500 Vrms between field and backplane. Moreover, the zero-crossing switching reduces electromagnetic interference significantly. Furthermore, the leakage current of 2.5 mA prevents false triggering of sensitive loads. Thus, the GE IC693MDL740G operates cleanly in electrically noisy industrial environments.

Energy Storage and Operational Stability

This output module stores energy using four onboard capacitors for power filtering. Specifically, two electrolytic capacitors smooth the 5 VDC supply for stable optocoupler operation. In addition, two tantalum capacitors provide high-frequency noise suppression for logic circuits. Furthermore, these capacitors maintain output status during brief power interruptions. Therefore, the GE IC693MDL740G continues operating through minor supply dips reliably.

Installation and Status Indicators

Nine LED indicators provide operational status at a glance on this module. First, eight green Output Status LEDs illuminate when each corresponding output channel turns on. Second, a green Power LED indicates the presence of backplane operating voltage. Additionally, the removable terminal block accepts 18-22 AWG stranded or solid wires. Furthermore, the module includes a keying mechanism for correct rack insertion. Thus, you can diagnose system status instantly without external tools.