TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the top of the unit.
Attach the CJC sensor together with input wiring to the input terminals. The CJC sensor is not interchangeable. Check that
its serial number is identical to that of the unit.
■
EXTERNAL DIMENSIONS unit: mm (inch)
76 (2.99) dia.
40 (1.57)
52.5 (2.07)
1 (.04)
60.9 (2.40)
46 (1.81)
50 (1.97)
4–M3 (.12) TAP
6 (.24) deep
Approx. 10 (.39)
CJC SENSOR (model: CJM)
2 (.08)
1 2 3
5 6
4
r b
■
CONNECTION DIAGRAM
+
–
T / C
CJC
SENSOR
metal leg
model: CJM
comp. leadwire
1
3
2
+
–
4
red
black
+
–
LOAD
6
5
OUTPUT
24V DC
4 – 20mA DC
WIRING INSTRUCTIONS
■
SCREW TERMINAL
Torque: 0.6 N·m
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Input: Check that the input voltage is within 0 – 100% of
full-scale.
If the thermocouple or its extension wires are broken, the
output goes over 100% (below 0% with downscale) due to
burnout function. Check leadwires in such a case.
3) Output: Check that the load is within the permissible
limit including wiring resistance.
Load Resistance (Ω) =
Supply Voltage (V) – 13 (V)
0.02 (A)
(including leadwire resistance)
ADJUSTMENT PROCEDURE
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any cali-
bration.
For matching the signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
■
PREPARATION
1) Loosen Screw (A) on top and open the covering.
2) Remove Screw (B) so that internal adjustment potenti-
ometers are exposed.
A
A
B
C
C
B
3) Remove Screw (C) and take out the circuit boards from
the housing.
1
2
3
4
5
6
SW3
SW2
VR4
VR5
VR1
VR2
TP1
VR3
SW1
SW1 : CJC Selector
SW2 : Zero Bias Selector
SW3 : Span Gain Selector
VR1 : 0% Adjustment (fine)
VR2 : 100% Adjustment (fine)
VR5 : 0% Adjustment (coarse)
VR4 : 100% Adjustment (coarse)
VR3 : CJC Sensor Adjustment
6TS1
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-4211 Rev.7 P. 2 / 4
