CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
7 – 8 with a multimeter.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
4) Alarm operations: Check the alarm operations referring
to the figure below.
5) Output load: Check that the output load is 380V
AC/120VA or 125V DC/30W at the maximum. For maxi-
mum relay life with inductive load, external protection is
recommended.
Alarm Trip Operation
Terminal No. in parentheses
Trip Operation in Power Failure
•
Output Code 2
: both relays turn OFF
•
Output Code 3
: both relays turn ON
0
50
100
▲
Input
(%)
Lo Setpoint
▲
Hi Setpoint
Hi Output
(1–2)ON
Lo Output
(5–6)ON
0
50
100
▲
Input
(%)
Lo Setpoint
▲
Hi Setpoint
Hi Output
(1–2)ON
Lo Output
(5–6)ON
• Output Code 2
• Output Code 3
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes.
• Hi Setpoint
Increase the input signal from a value lower than the set-
point and check that the trip point remains within the
accuracy described in the data sheet.
• Lo Setpoint
Decrease the input signal from a value higher than the
setpoint and check that the trip point remains within the
accuracy described in the data sheet.
When the setpoints are shifted, please contact M-System’s
Sales Office or representatives.
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.
ASL
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-1613-A Rev.7 P. 3 / 3
