27PM
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-7657-A Rev.2 P. 2 / 3
TERMINAL CONNECTIONS
Connect the module as in the diagram below.
■
EXTERNAL DIMENSIONS unit : mm (inch)
44 (1.73) dia.
6.3
(.25)
33 (1.30)
6 (.24) dia.
16.5 (.65)
6–M3 SCREW
2–4.5 (.18) dia.
MTG HOLE
20.7 (.81)
19.5 (.77)
12.7 (.5)
1
4
3
2
–
+
7.6 (.30) dia.
■
CONNECTION DIAGRAM
LOAD
OUTPUT
24V DC
4 – 20mA DC
*
1
POTENTIOMETER
*
1. Limited to 250 – 500Ω when using the communication to configure
the module.
+
–
4
1
3
3
2
1
max.
min.
+
–
WIRING INSTRUCTIONS
■
SCREW TERMINAL
Torque: 0.5 N·m
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Input: Check that the voltage between terminal 3 – 4 is
within 0 – 100% of full-scale.
If the potentiometer 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) – 9 (V)
0.023 (A)
(including leadwire resistance)
ADJUSTMENT PROCEDURE
To calibrate the signal to match with a receiving instru-
ment or to change the factory-set configurations, use the PC
Configurator software installed on a Windows PC via the
Bell202 Modem (model COP-HU).
The PC Configurator software is downloadable at M-Sys-
tem’s web site: http://www.m-system.co.jp
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.
