AS4T
P. 3 / 4
EM-1608 Rev.9
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the con-
nection diagram on top of the unit.
Attach the CJC sensor together with input wiring to the
input terminals. The CJC sensor is not interchangeable.
Check that its serial number is the same as that of the
unit.
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
+
–
T / C
CJC
SENSOR
metal leg
model: CJM
comp. leadwire
5
4
6
+
–
+
–
T / C
CJC
SENSOR
metal leg
comp. leadwire
5
4
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 across the terminals 5 – 6 with a sensitive
voltmeter to show a normal emf voltage value.
If the thermocouple or its extension wires are broken, the
PV display indicates the upper range temperature limit
and flashes (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 load is 380V AC/120VA
or 125V DC/30W (380V AC/600VA or 125V DC/150W for
dual alarm, Output Code 5) at the maximum. For maxi
-
mum 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.
