B3HU
P. 2 / 3
EM-7502-A Rev.3
Close across the terminals 1 & 2 for a resistance or RTD input.
Limited to 250 – 1100
Ω
for HART communication.
A safety barrier must be installed for the intrinsic safety.
The safety barrier must meet the Ex-data of this unit and must be approved for the hazardous location.
*
1.
*
2.
*
3.
1
4
2
3
3
2
1
POT
DC mV
A
A
B
B
RTD & Resistance
4-wire
T/C
3-wire
2-wire
A
B
B
A
B
7
8
*
1
*
1
+
–
+
–
+
+
–
–
*
2
*
3
+
–
LOAD
OUTPUT
24VDC
4 – 20mADC
Hazardous Area
Safe Area
Safety Barrier
CJC
5
6
*
4
*
4. Replace the Terminal Block (4 – 5 – 6) with the one connected with the CJC Sensor, included in the package.
■
WIRING INSTRUCTIONS
• Applicable wire size
Solid:
0.2 to 2.5 mm
2
(0.55 to 1.75 dia.)
Stranded: 0.2 to 2.5 mm
2
Tinning wire ends may cause contact failure
and therefore is not recommended.
Ferruled: 0.2 to 1.5 mm
2
(0.55 to 1.35 dia.)
The following Phoenix Contact terminals are
recommended:
AI 0.25-8YE
0.2 to 0.25 mm
2
AI 0.34-8TQ
0.25 to 0.34 mm
2
AI 0.5-8WH
0.34 to 0.5 mm
2
AI 0.75-8GY
0.5 to 0.75 mm
2
AI 1.0-8RD
0.75 to 1.0 mm
2
AI 1.5-8BK
1.0 to 1.5 mm
2
• Expose wire conductors by 8 mm (0.31”).
8 mm
8 mm
4 mm dia.
max.
4 mm dia.
max.
Wire exposure
Recommended
ferruled wire
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
INSTALLATION
■
DIN RAIL MOUNTING
Set the unit so that its DIN rail adaptor is at the bottom.
Position the upper hook at the rear side of the unit on the
DIN rail and push in the lower. When removing the unit,
push down the DIN rail adaptor utilizing a minus screw-
driver and pull.
TERMINAL CONNECTIONS
Connect the unit as in the diagram below. For use in a hazardous location, refer to “Installation Diagram” in the “Safe Instal-
lation Manual.”
