AS4R
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-1606 Rev.14 P. 5 / 5
■
CONNECTION DIAGRAM
U(+)
V(–)
POWER
7
8
10
11
9
2
3
1
L2 OUTPUT
L1 OUTPUT
N.C.
N.O.
COM
N.C.
N.O.
COM
■
SPDT RELAY
U(+)
V(–)
POWER
7
8
10
11
9
2
3
1
L4 OUTPUT
L1 OUTPUT
COM
L3 OUTPUT
L2 OUTPUT
COM
■
N.O. RELAY
■
N.C. RELAY
10
11
9
2
3
1
L4 OUTPUT
L1 OUTPUT
COM
L3 OUTPUT
L2 OUTPUT
COM
4
5
A
B
B
RTD
6
4
5
A
B
B
RTD
6
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 voltage across the terminals 4 – 5 with a
sensitive voltmeter.
With 20°C or 68°F and input XΩ, the voltage across the
terminals are given by:
X
× 1.18
(X + 1000)
If the RTD or its extension wires are broken, the PV
display indicates the upper range temperature limit
and blinks (the lower range limit with downscale) due
to burnout function. Check leadwires in such a case.
4) Alarm operations: Check the alarm operations referring
to the figure below.
5) Output load: Check that the output rating road is: 240
V AC / 120 VA or 30 V DC / 30 W (240 V AC / 600 VA or
30 V DC / 150 W for dual alarm, Output Code 5) at the
maximum. For maximum relay life with inductive load,
external protection is recommended.
0
50
100
▲
Input
(%)
LL
L
▲
▲
HH
H
L2 (1–2)
ON
▲
L3 (1–3)
ON
L4 (9–11)
ON
OFF
OFF
L1 (9–10)
ON
OFF
OFF
Alarm Trip Operation
Terminal No. in parentheses
Example with quad N.O. contacts (LL, L, H, HH)
Trip Operation in Power Failure
• Output code 2: All relays turn off.
• Output code 3: All relays turn on.
• Output code 5: Terminals 1 – 3, 9 – 11 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.
