PU300/PU500 INSTALLATION MANUAL
10232-10.doc
Polyamp AB, Sweden
www.polyamp.com
Page
10 (10)
PU300 (normal input voltage range)
Input voltage code Input voltage range
C 50-150Vd.c.
D 90-270Vd.c.
PU300 with option H
Input voltage code Input voltage range
C 85-150Vd.c.
D 130-270Vd.c.
Table 3. Input voltage range with and without
option H
The unit starts if the voltage is within the
normal input voltage range, but depending
on the load (if the NTC is heated up) a load
change might cause the converter to stop
and start as described before.
All models have a ”slow start” feature. To reduce
input current during start up the output capacitors
are charged ”slowly” (approximately 0.1s).
11 Trouble shooting
11.1 There is no output voltage
1.
Check that the input fuse is not broken.
2.
Check that the input voltage polarity is correct.
3.
Check that the input voltage is within the
specified limits, see front label.
4.
The converter may be in current limit due to
excessive output current or an external short-
circuit on the output.
Disconnect the input.
Disconnect the load.
Connect the input again and measure the
output voltage.
If the converter now starts the load was too
heavy or there was a short-circuit.
If there is an external short-circuit, remove
it.
If the load is too large decrease the load or
consult your Polyamp dealer.
5.
The unit is broken. Contact your Polyamp
dealer.
11.2 The input fuse blows when the
input is connected
1.
Check that the input voltage polarity is correct.
2.
Check that the input fuse is of time
delay type and with correct current
rating. See
Table 1
.
3.
The unit is broken. Contact your
Polyamp dealer.
11.3 The converter starts and stops
repeatedly
All models have an under voltage protection which
shuts down the converter if the input voltage is
below specified limit (see front label).
1.
The cables to the converter input may be under-
sized, causing too high voltage drop in the
supply cables.
2.
Your supply does not have enough current
capacity so the input voltage to the converter
drops below specified limit.
11.4 Fault report
We suggest that you return a faulty converter to:
POLYAMP AB
Box 229 / Bäckgatan 10
S-597 25 ÅTVIDABERG
SWEDEN
Tel: +46 120 85400
Fax: +46 120 85405
or to your local Polyamp distributor.
To help us locate the fault, please describe the fault
and how and when it occurred.
