M-system 27RS Instruction Manual page 2

TERMINAL CONNECTIONS
Connect the module as in the diagram below.
■ EXTERNAL DIMENSIONS unit : mm (inch)
2–4.5 (.18) dia.
MTG HOLE
7.6 (.30) dia.
■ CONNECTION DIAGRAM
4
3
INPUT * 1
2
1
*1. Input Connection Examples
RTD & RESISTANCE
• Two-wire • Three-wire
4
B
3
2
1
A
*2. Limited to 250 – 500Ω when using the communication
to configure the module.
WIRING INSTRUCTIONS
■ SCREW TERMINAL
Torque: 0.5 N·m
44 (1.73) dia.
33 (1.30)
16.5 (.65)
+ –
1
2 3
6–M3 SCREW
24V DC
+
*
2
OUTPUT LOAD
–
4 – 20mA DC
• Four-wire
4
B B
3
B B
2
A
1
A A
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
6 (.24) dia.
4
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Input: Check the input signal.
If RTD wires are broken, the output goes over 100% (be-
low 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) =
4
3
ADJUSTMENT PROCEDURE
2
To calibrate the signal to match with a receiving instru-
1
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.
20.7 (.81)
19.5 (.77)
12.7 (.5)
Supply Voltage (V) – 9 (V)
0.023 (A)
(including leadwire resistance)
EM-7653-A Rev.3 P. 2 / 3
27RS