Copyright HK Instruments, Inc. 2017
www.hkinstrumentsinc.com
Installation version 2.0 2017
Figure 2c - Wiring diagram: relay
NC
COM
NO
Figure 3 - Jumper installation
STEP 2: WIRING DIAGRAMS
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.
Figure 2b - Wiring diagram:
Power input and signal out
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
WIRING DIAGRAMS
CONTINUED
Figure 2a - Routing the cables
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
STEP 3: CONFIGURATION
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 section and length of the used connection wires. If long
and/or small cross section wires are used, supply current and wire
resistance may generate a voltage drop in the common GND wire
resulting in a distorted output measurement.
Configuration of the CDT series device consists of:
1) Configuring the jumpers (see step 4).
2) Configuration menu options.
(Display versions only. See the user manual for further details.)
(Grey colour indicates that a jumper is installed)
No jumper
Circuit open
Jumper installed
Circuit closed
Jumper stored
