M7EASDY
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-7763 Rev.5 P. 9 / 9
WIRING INSTRUCTIONS
■
SCREW TERMINAL
Torque: 0.8 N·m
■
SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm
2
(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
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
10 – 11 with a multimeter.
3) Input: Check that the input signal is within 0 – 100% of
full-scale.
4) Alarm operations: Check the alarm operations referring
to the figure below.
5) Output load: Check that the output load is 250 V AC /
120 VA or 125 V DC / 30 W (250 V AC / 480 VA or 125 V
DC / 150 W for dual alarm, Output Code 5) at the maxi-
mum. For maximum relay life with inductive load, exter-
nal protection is recommended.
0
50
100
Input
%
LL
L
HH
H
L2 (5–7)
L3 (5–8)
L4 (3–9)
L1 (3–6)
ON
ON
OFF
ON
ON
OFF
OFF
OFF
• Example
Quad N.O. contacts (LL, L, H, HH)
Alarm Trip Operation
Terminal No. in parentheses
Trip operation in power failure
Output code 2
: All relays turn OFF.
Output code 3
: All relays turn ON.
Output code 5
: Terminals 3 – 9, 5 – 8 turn ON.
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes.
• H (HH) Setpoint
Increase the input signal from a value lower than the set-
point and check that the relay trips at the H (or HH) set-
point within the setpoint accuracy described in the data
sheet.
• L (LL) Setpoint
Decrease the input signal from a value higher than the
setpoint and check that the relay trips at the L (or LL)
setpoint within the setpoint 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.
