IM 12D08N04-01E
3-7
3. Installation and Wiring
3-3. Wiring the power supply
3-3-1. General precautions
Make sure the power supply is switched off. Also, make sure that the power supply is
correct for the specifications of the EXA and that the supply agrees with the voltage
specified on the textplate. Remove the front cover by unscrewing the four screws to
check this textplate on the top of the display board.
Local health and safety regulations may require an external circuit breaker to be in-
stalled. The instrument is protected internally by a fuse. The fuse rating is dependent on
the supply to the instrument. The 250 VAC fuses should be of the “time-lag” type,
conforming to IEC127.
Fuse ratings are 230 VAC - 50 mA; 100 VAC - 100 mA; 115 VAC - 100 mA.
The internal fuse is located next to the power terminals (in the lower righthand corner).
3-3-2. Access to terminal and cable entry
Terminals 1, 2 and 3 on the bottom terminal strip are used for the power supply. Guide
the power cables through the gland closest to the power supply terminals. The terminals
will accept wires of 2.5 mm
2
(14 AWG). Use cable finishings if possible.
Connect the wires as indicated in the wiring diagram (refer to figure 3-6).
13
14
15
11
12
16
22
21
63
66
65 62
61
SENSOR
mA OUTPUT
CONT
SCREEN
mA2
mA1
Sensor Inputs
Contact
Input
mA Outputs
71
S4
S3
S2
S1
C NC NO
72
73 51
52 53
41
43
31
33
42
32
250 VAC
5 A
100 VA
250 VDC
5 A
50 W
FUSE
100
115
230
250VAC; T
3
1
2
G
L1
L2
C NC NO
C NC NO
C NC NO
VAC
VAC
VAC
100 mA
100 mA
50 mA
Relay Contacts
Power Supply
High voltage compartment
Figure 3-7. Input and output connections
Содержание SC402G
Страница 5: ...IM 12D08N04 01E 4 Preface...
Страница 25: ...IM 12D08N04 01E 3 12 3 Installation and Wiring...
Страница 63: ...IM 12D08N04 01E 6 4 6 Calibration...
Страница 69: ...IM 12D08N04 01E 9 2 9 Spare Parts...