Input Wiring - Distech Controls ECLYPSE ECY-VAV Installation Manual

Input Wiring

Input options must be properly configured in EC- gfx Program to ensure correct input readings. The table below shows the controller's available universal
input designation. For terminal block connector wiring best practices, see
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 the shield length should be kept as short as possible.
Sensor Input Type
£
Dry Contact input.
£
Pulsed input.
£ Pulse input used with a 2-wire sensor powered by its own power source –
this input supports a maximum input frequency of 1Hz (500ms minimum ON/
OFF). Connect the pulse input according to the figure for a pulse meter that
can pull-down a +5VDC supply with a 10KΩ pull-up resistor (Internal supply
type).
£ RTD input (for example, 1000Ω).
£
Thermistor Input (for example, 10kΩ type II and III).
£
Resistive input, maximum 350kΩ (for example, use with 10kΩ and 100kΩ
potentiometers).
£
0 to 20mA input used with a 2-wire, 0 to 20mA sensor powered by the con-
troller's internal 18VDC power supply.
£ An on-board 18VDC power supply can provide the necessary power for
20mA current loop sensor operation.
£
Connect a 249Ω resistor between the UIx and COM terminals.
£ 0 to 20mA input used with a 2-wire, 0 to 20mA sensor powered by an exter-
nal 24 AC/DC power supply.
£
Connect a 249Ω resistor between the UIx and COM terminals.
£ 0 to 20mA input used with a 3-wire, 0 to 20mA sensor powered by an exter-
nal 24 AC/DC power supply.
£
Connect a 249Ω resistor between the UIx and COM terminals.
When daisy-chaining two or more controllers on one transformer, wire the
controller according to Figure 14.
£ 0 to 20mA input used with a sensor powered by its own power source.
£ Connect a 249Ω resistor between the UIx and COM terminals.
£ Voltage input used with a 3-wire 0 to 10VDC or 0 to 5VDC sensor powered
by an external 24 AC/DC power supply.
When daisy-chaining two or more controllers on one transformer, wire the
controller according to Figure 14.
£ Voltage input used with a 0 to 10VDC or 0 to 5VDC sensor powered by its
own power source.
Table 1: ECY-VAV Input Wiring
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General Wiring Recommendations
ECY-VAV Input Input Connection Diagram
Designation
£
UIx
Digital Dry Contact
£
DIx
£ UIx
£
DIx
Pulse Meter
Output
£ UIx
Thermistor
£
UIx
£
UIx
£ UIx
£ UIx
£ UIx
£ UIx
£ UIx
[pg. 2]. Inputs can be connected as follows.
UIx, DIx or SIx
NO-NC
COM
10 k
UIx or DIx
+
-
COM
UIx or SIx
RTD/
COM
UIx or SIx
COM
+18VDC
+
UIx
0-20mA
Sensor
-
COM
249Ω / ¼W
249Ω ¼W
0-20mA
UIx
-
Sensor
+
COM
24VDC
249Ω ¼W
0-20mA
UIx
Sensor
+
Common
COM
24VAC
AC
249Ω ¼W
0-20mA
UIx
+
Sensor
-
COM
UIx
+
0-10V
Common
Sensor
COM
24VAC
AC
UIx
0-10V
+
Sensor
-
COM
To Digital Input
+5 VDC
Controller
Pulse Input
Equivalent
Circuit
To Pulse Count
Accumulator
To Analog-To-
Digital Converter
To Analog-To-
Digital Converter
To Analog-
To-Digital
Converter
To Analog-To-
Digital Converter
To Analog-To-
Digital Converter
To Analog-To-
Digital Converter
To Analog-To-
Digital Converter
To Analog-
To-Digital
Converter