GE HE693RTD600M RTD Module | 6-Channel Pt100 Input

Technical Specifications and Input Design

This analog input module interfaces directly with RTD temperature sensors. The GE HE693RTD600M supports platinum and nickel resistance devices for precision measurement. You can install this unit into any Series 90-30 or compatible PLC rack. Its compact design fits into a single I/O slot position. The module weighs approximately 0.38 kilograms. Its dimensions measure 12.5 cm in height, 5.5 cm in width, and 11 cm in depth.

Parameter	Specification
Brand	GE Fanuc / Horner Electric
Model	HE693RTD600M
Category	Analog Input Module / RTD Temperature Interface
Weight	0.38 kg
Height	12.5 cm
Width	5.5 cm (single slot)
Depth	11 cm
Number of Input Channels	6 channels
RTD Types Supported	Pt100, Pt1000, Ni100, Ni120, Cu10
Temperature Range (Pt100)	-200°C to +850°C
Resolution	0.1°C (16-bit analog-to-digital)
Accuracy	±0.5°C at 25°C ambient
Excitation Current	0.5 mA per channel (constant current)
Update Time per Channel	300 milliseconds
Isolation Voltage	1500V AC between field and logic
Energy Storage	None (no battery or capacitors)
Component Count	Single PCB with 6 precision analog circuits

Sensor Wiring and Configuration

The module accepts 2-wire, 3-wire, or 4-wire RTD connections. Three-wire configuration provides the best lead resistance cancellation automatically. You can mix different RTD types across the six input channels freely. The GE HE693RTD600M uses a removable screw terminal block for field wiring. Each channel includes built-in open-sensor detection for fault monitoring. An amber LED illuminates when the module detects a broken RTD wire.

Signal Processing and Data Format

The analog-to-digital converter delivers 16-bit temperature data to the PLC. Each channel returns a raw integer value representing 0.1°C increments. For example, a reading of 2350 means 235.0°C. The module performs all linearization and cold junction compensation internally. Consequently, the PLC receives directly usable temperature values without extra math. The unit draws all operating power from the 90-30 backplane. It requires no external power supply or separate excitation source.

Installation and Operational Guidelines

You must insert this module into any standard 90-30 I/O slot position. The backplane supplies 5V DC power to the analog circuits. The module draws approximately 200 mA from this backplane supply. You should use shielded twisted-pair cables for all RTD connections. This practice reduces electrical noise interference from nearby motors or drives. The GE HE693RTD600M stores no configuration data when you remove power. Therefore, the CPU must re-initialize all settings after each power cycle.