Copyright HK Instruments 2017
www.hkinstruments.fi
Installation version 5.0 2017
CAUTION!
• For CE compliance, a properly grounded shielding cable is
required.
• Use copper wire only. Insulate or wire nut all unused leads.
• Supply a separate cable for relay and signal out when using line
voltage to power the relay.
• Any wiring may carry the full operating line voltage current based
on field installation. The cover locking screw must be installed if
the line voltage is supplied to the relay.
• Care should be used to avoid electrostatic discharge to the device.
• This unit has configuration jumpers. You may need to reconfigure
this device for your application.
1) Route the cables through the square opening in the back plate or
for surface wiring select a knockout on the top or bottom of the
wall plate, as shown in Figure 2a.
2) Connect the wires as shown in Figure 2b and 2c.
WIRING DIAGRAMS
CONTINUED
Figure 2a - Routing the cables
24 V
GND
CO
2
rH
Temp
+
Output 0/2–10 V / 4–20 mA
Output 0/2–10 V / 4–20 mA
Output 0/2–10 V / 4–20 mA
Figure 2b - Wiring diagram: Power input & signal output
Wires can be routed through the square opening in the back plate
Wires can be routed through the top knockouts
Wires can be routed through the bottom knockouts
Figure 2d - Wiring diagram: Relay
NC
COM
NO
STEP 2: WIRING DIAGRAMS
NOTE! When using long connection wires it may be necessary to use a
separate GND wire for voltage output current to prevent measurement
distortion. The need for an extra GND wire depends on the cross sec
-
tion and length of the used connection wires. If long and/or small cross
section wires are used, supply current and wire resistance may gener
-
ate a voltage drop in the common GND wire resulting in a distorted
output measurement.
CO
2
T
24 V
GND
+
Power Supply
24VDC / 24VAC
Output 0/2...5/10 V
Output 0/2...5/10 V
V
V
Figure 2c - Wiring diagram: Extra GND wire
