GE IC609SJR121B | Series One Junior Controller

The GE IC609SJR121B serves as a compact programmable controller for small automation tasks. This Series One Junior Controller features 12 discrete inputs and 8 discrete outputs for basic control. It operates on 24 V DC power for compatibility with standard industrial sensors. Weighing only 0.85 kg, the GE IC609SJR121B mounts easily on a DIN rail or panel. Its dimensions measure 190 mm x 90 mm x 55 mm.

Input and Output Specifications

The GE IC609SJR121B accepts 24 V DC sinking inputs from limit switches and push buttons. Each input channel draws 7 mA at nominal voltage for reliable signal detection. The module provides 8 relay outputs for driving actuators and contactors. Each output channel handles 2 A at 24 V DC or 120 V AC. Therefore, the GE IC609SJR121B suits small machines and standalone equipment perfectly.

Memory Architecture and Energy Storage

The GE IC609SJR121B includes 1 KB of user program memory for ladder logic instructions. This controller features 64 timers and 64 counters for basic sequencing applications. It stores 128 internal relays for program logic and data handling. Importantly, the GE IC609SJR121B contains no internal battery for maintenance-free operation. It uses EEPROM memory to retain programs permanently without backup power. Consequently, you never need to replace batteries or worry about program loss.

Technical Specifications Table

Below are the complete technical parameters for engineers and procurement teams:

Parameter	Specification
Full Product Name	GE IC609SJR121B
Product Category	Series One Junior Controller
Number of Discrete Inputs	12
Number of Discrete Outputs	8
Input Type	24 V DC sinking (NPN)
Output Type	Relay (Form A, normally open)
Rated Input Voltage	24 V DC (20.4 V to 28.8 V DC)
Input Current per Channel	7 mA at 24 V DC
Output Current per Channel	2 A at 24 V DC or 120 V AC
Maximum Output Current per Module	8 A total
User Program Memory	1 KB (EEPROM)
Number of Timers	64
Number of Counters	64
Internal Relays	128
Scan Time	6 ms per 1K of logic
Programming Language	Ladder logic
Energy Storage	No battery (EEPROM only)
Number of Components	1 main PCB + 1 power supply + terminal block + housing
Net Weight	0.85 kg (850 grams)
Gross Weight (packaged)	1.05 kg
Dimensions (H x W x D)	190 mm x 90 mm x 55 mm
Wire Size (Terminal)	AWG 24 to AWG 14 (0.2 mm² to 2.5 mm²)
LED Indicators	Power, RUN, I/O status (20 LEDs)
Operating Temperature	0°C to +55°C
Storage Temperature	-40°C to +85°C
Degree of Protection	IP20
Certifications	CE, UL 508, CSA

Installation and Application Details

The GE IC609SJR121B mounts directly onto a standard 35 mm DIN rail. Snap the controller onto the rail until the locking clip engages securely. Wire the 24 V DC power supply to the dedicated power terminals. The GE IC609SJR121B requires no external programming terminal for basic operation. You can use a handheld programmer or PC software for ladder logic development. This controller suits small conveyor sections, pump stations, and packaging machines. It also works perfectly for building automation and simple process control tasks. Thus, the GE IC609SJR121B provides reliable control for cost-sensitive industrial applications.