TERMINAL CONNECTIONS
Connect the unit as in the diagram below.
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)
I/O PINS
17.5 (.69)
48 (1.89)
75 (2.95)
83 (3.27)
■
CONNECTION DIAGRAM
• Mounting on the Installation Base (model: M8BSx)
+
–
Installation Base
OUTPUT 1
6
7
8
9
10
11
+
–
+
–
OUTPUT 2
POWER
3
1
2
4
D
A
B
C
+
–
T / C
CJC
SENSOR
metal leg
model: CJM
comp. leadwire
+
–
green
red
*
The CJC Sensor for the single mount base is not compatible
with the one for the multiple mount base.
Leadwires for the multiple mount type are replaced with metal
legs with the single mount type.
*
• Mounting on the Single Mount Base (model: M8BS-1-1)
Refer to the data sheet and the instruction manual for the
M8BS-1-1.
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input: Check the power input voltage.
3) 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.
4) Output: Check that the load resistance meets the de-
scribed specifications.
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.
■
HOW TO CALIBRATE THE OUTPUT SIGNAL
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
(Output 1 and Output 2 are linked.)
1) ZERO: Apply 0% input and adjust output to 0%.
2) SPAN: Apply 100% input and adjust output to 100%.
3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the output
signal for the respective input signal remains within accu-
racy described in the data sheet. When the output is out of
tolerance, recalibrate the unit according to the “ADJUST-
MENT PROCEDURE” explained earlier.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
M8TS1
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-5381 Rev.1 Rev.1 P. 2 / 2
