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Input Wiring
Before connecting a sensor to the controller, refer to the installation guide of the equipment manufacturer.
£
For a wire length less than 75’ (23m), either a shielded or unshielded 18AWG wire may be used.
£
For a wire up to 200’ (61m) long, a shielded 18AWG wire is recommended.
£
The shield of the wire should be grounded on the controller side only and shield length should be kept as short as possible.
Table 1 shows the ECL-203, ECL-300, ECL-400, and ECL-600 Series controller pulse and current input jumper support. Table 2 shows the available uni-
versal input (UIx) wiring methods.
Controller
Fast and Slow Pulse Inputs support
Current Input Jumper support:
0 to 10VDC / 0 to 20mA
50Hz: 10ms minimum ON/OFF
(Fast Pulse)
1Hz: 500ms minimum ON/OFF
(Slow Pulse)
ECB‑203
None
UI1 to UI6
None
ECB‑300
UI1 to UI4
UI5 to UI10
Yes; see
Table 2
ECB-400 Series
UI1 to UI4
UI5 to UI12
ECB-600 Series
UI1 to UI4
UI5 to UI16
Table 1: Controller Input Support
Sensor Input Type
Input Connection Diagram
£
Dry Contact input.
UIx
COM
To Digital
Input
Digital Dry Contact
NO-NC
£
RTD input (for example, 1000Ω).
£
Thermistor Input (for example, 10kΩ type II and III).
UIx
COM
To Analog-
To-Digital
Converter
RTD/
Thermistor
£
Resistive input, (for example, use with 10kΩ and 100kΩ potentiometers).
UIx
COM
To Analog-
To-Digital
Converter
Potentiometer
10kΩ
ECL-203 Series:
£
0 to 20mA input used with a 2-wire, 0 to 20mA sensor powered by the controller’s internal
15VDC power supply.
+
–
Sensor
0-20mA
UIx
COM
+15VDC
To Controller’s
Analog-To-Digital
Converter
249
Ω / ¼W
ECL-203 Series:
£
0 to 20mA input used with a 2-wire, 0 to 20mA sensor powered by an external 24VDC
power supply.
-
+
0-20mA
Sensor
UIx
COM
To Analog-
To-Digital
Converter
24VDC
249
Ω
¼W
ECL-203 Series:
£
0 to 20mA input used with a 3-wire, 0 to 20mA sensor powered by an external 24VAC
power supply.
AC
+
Common
0-20mA
Sensor
UIx
COM
To Analog-
To-Digital
Converter
24VAC
249
Ω
¼W
ECL-203 Series:
£
0 to 20mA input used with a sensor powered by its own power source.
+
-
0-20mA
Sensor
UIx
COM
To Analog-
To-Digital
Converter
249
Ω
¼W
