IMR01H01-E4
4
3. WIRING
This chapter describes wiring cautions and terminal configuration.
3.1 Wiring Cautions
#"
For thermocouple input, use the appropriate compensation wire.
#"
For RTD input, use low resistance lead wire with no difference in resistance between the three lead wires.
#"
To avoid noise induction, keep input signal wire away from instrument power line, load lines and power lines of other electric
equipment.
#"
If there is electrical noise in the vicinity of the instrument that could affect operation, use a noise filter.
-
Shorten the distance between the twisted power supply wire pitches to achieve the most effective noise reduction.
-
Always install the noise filter on a grounded panel. Minimize the wiring distance between the noise filter output and the instrument
power supply terminals to achieve the most effective noise reduction.
-
Do not connect fuses or switches to the noise filter output wiring as this will reduce the effectiveness of the noise filter.
#"
About four seconds are required as preparation time for contact output every time the instrument is turned on. Use a delay relay
when the output line is used for an external interlock circuit.
#"
Power supply wiring must be twisted and have a low voltage drop.
#"
For an instrument with 24 V power supply, supply power from a SELV circuit.
#"
This instrument is not furnished with a power supply switch or fuse. Therefore, if a fuse or power supply switch is required, install
close to the instrument.
Recommended fuse rating: Rated voltage 250 V, Rated current 1 A Fuse type: Time-lag fuse
#"
Use the solderless terminal appropriate to the screw size.
Screw size: M3
×
6
Recommended tightening torque: 0.4 N
･
m (4 kgf
･
cm)
3.2 Terminal Configuration
!"
MA900
(9) Input
3, 4
RTD
RTD1
B
B
A
15
14
13
RTD2
B
B
A
18
17
16
RTD3
B
B
A
21
20
19
RTD4
B
B
A
24
23
22
Thermocouple
TC1
+
-
15
14
TC2
+
-
18
17
TC3
+
-
21
20
TC4
+
-
24
23
Voltage
15
14
IN1
+
-
18
17
IN2
+
-
21
20
IN3
+
-
24
23
IN4
+
-
(1) Power
(Option)
(6) Contact input
RUN/STOP
Memory area
transfer
40
39
DI2
DI1
DI4
42
41
43
DI SET
(5) Alarm output
Relay contact
49
50
ALM2
NO
(Option)
51
52
ALM3
NO
(2) Alarm output
Relay contact
3
4
ALM1
NO
(NO: Normally Open)
38
37
DI
(3) Output 1
1
Relay contact
NO
OUT1
6
5
NO
OUT2
8
7
NO
OUT3
10
9
NO
OUT4
12
11
Triac
SSR
OUT1
6
5
SSR
OUT2
8
7
SSR
OUT3
10
9
SSR
OUT4
12
11
Voltage pulse/
Current
OUT1
+
-
6
5
OUT2
+
-
8
7
OUT3
+
-
10
9
OUT4
+
-
12
11
(4) Output 2 (option)
1
Relay contact
NO
OUT5
54
53
NO
OUT6
56
55
NO
OUT7
58
57
NO
OUT8
60
59
Triac
SSR
OUT5
54
53
SSR
OUT6
56
55
SSR
OUT7
58
57
SSR
OUT8
60
59
Voltage pulse/
Current
OUT5
+
-
54
53
OUT6
+
-
56
55
OUT7
+
-
58
57
OUT8
+
-
60
59
1
Not isolated between each channel.
(7) Communication (option)
RS-232C
RD
SD
SG
46
45
44
RS-485
T/R (B)
T/R (A)
SG
46
45
44
RS-422A
R (A)
T (A)
SG
47
45
44
R (B)
48
T (B)
46
27
26
25
30
29
28
33
32
31
36
35
34
CT2
CT1
CT4
CT3
CT6
CT5
CT8
CT7
(Option)
(8) CT input
2
37
38
39
40
41
42
43
44
45
46
47
48
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
49
50
51
52
53
54
55
56
57
58
59
60
1
2
3
4
5
6
7
8
9
10
11
12
(1)
(2)
(3)
(5)
(4)
(6)
(7)
(8)
(9)
3
RTD and voltage inputs:
Not isolated between each input channel.
N
100-240 V
AC L
2
1
N
24 V
AC L
2
1
+
-
24 V
DC
2
1
4
Input terminals (TC1 to TC4, RTD1 to RTD4, IN1 to IN4)
correspond to channel numbers 1 to 4 (CH1 to CH4).
2
Relationship between CT input and channel number, see
7.8 Heater Break Alarm (HBA) Function. (P.18)
"
"
To prevent electric shock or instrument failure, do not turn on the power until all the wiring is completed.
!
WARNING
