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4 2 3 4 6 0 0 A N D 4 2 3 4 6 0 1 | K AT H A R O M E T E R P O W E R S U P P LY U N I T S | I M/4 2 3 4 6 0 0 R E V. E
...5 Electrical installation
Accessing the PSU terminals
WARNING . HAZARDOUS VOLTAGES
If the PSU is cubicle mounted or has its cover removed
for test purposes, AC mains supply voltage is exposed
at certain locations within the assembly when
supplies are connected. Thus, there is a risk of
electrocution.
All normal precautions must be taken to avoid the risk
of accidental electrical shock during installation and
maintenance of the equipment. Ensure that the
supply cable is disconnected at its source before
touching any electrical connections.
CAUTION – PROPERTY DAMAGE
Ensure that the correct version of the unit has been
supplied for the supply voltage available. A 115 V unit
cannot be used with a 230 V supply or vice versa.
Check that the current output meets the
katharometer input requirements (see katharometer
data label) – see Figure 7. If in doubt contact ABB
Limited.
Remove the power supply unit cover to obtain access to the
separate labeled terminal blocks – see Figure 5.
Figure 5 PSU cover removal
To gain access, remove the four
screws and lift off the cover
Electrical connections
The mains terminal block, TB1, is situated next to the
transformer, T1, and fuses, F2 and F3.
Connect the AC mains input cable as in Figure 6.
IMPORTANT (NOTE)
Earth bonding to be made via M5 earth stud.
Connect the DC output and 10 V cables as in Figure 7.
M5 earth stud
115 V AC
or
230 V AC
supply
See CAUTION opposite
Tighten cable gland
Figure 6 AC mains supply connections
DC output
terminal block
Black
F1
TB2
Red
Cable clamp
E
D
AUX 10V
C
–
X
+
B
A
Current output link
Output current (mA)
500
400
350
250
180
Figure 7 Outputs connections
6
230 V
8
T1
115 V
10
TB1
L
N E
F2 F3
Tighten cable gland
To katharometer
(see manual for
termination details)
To katharometer temperature
control circuit
(see manual for
termination details)
Links
A to X
B to X
C to X
D to X
E to X
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