
8
SENSOR INPUTS
The Optimizer3 includes eight inputs for sensors and five inputs for control signals.
Figure 2
– Sensor Field Wiring
Loop-powered (2-wire) digital or analog sensor inputs.
Supports 4-20 mA sensors or digital sensors with up to
18 VDC compliance voltage. 20 AWG twisted-pair wiring
recommended. Digital good to 700m.
Loop-powered (2-wire) analog-only sensor inputs.
Supports 4-20 mA sensors with up to 24 VDC compliance
voltage. 20 AWG twisted-pair wiring recommended.
Sensor 5
Sensor 4
Sensor 3
Sensor 2
Sensor 1
Sensor 5
Sensor 4
Sensor C
Sensor B
Sensor A
Sensor inputs A, B, and C are dual-function. They accept either 2-wire 4-20 mA analog sensors or 2 wire Sensors with a Proprietary
Digital Protocol. Sensor inputs 1-5 are 4-20 mA analog only and do not accept the digital protocol. For each 4-20 mA analog sensor,
there is a corresponding setup area in the CONFIGURATION web pages where the scaling of the input is done. The digital Sensors
require no scaling. The Optimizer3 scales those signals automatically.
• 18 VDC sensor power is provided for sensors A, B, and C.
• 24 VDC sensor power is provided for Sensors 1-5.