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Installation
(4) While observing the Current Indicator (ammeter) on the Current Limit Module, slowly adjust
the CURRENT LIMIT control to the value of output current not to be exceeded during normal
operation. This should be accomplished at a temperature where the load will draw excessive
currents.
x. This completes the initial wiring and start-up procedure.
2-19.
MULTIPLE ZONE CONTROL WITH ONE TEMPERATURE CONTROLLER:
2-20.
This form of control may be achieved by putting the inputs of all power controllers in series so that the
output of the temperature controller brings all power controllers up and down together. Individual zones may
be trimmed or adjusted with the gain and bias controls on the power controller associated with that zone. If the
temperature controller does not have sufficient Voltage dynamic range to drive several power controllers in
series, the power controller input impedances can be shunted down to reduce the Voltage across each and the
gain of each power controller increased to compensate for the reduced signal. Each power controller should
have at least 2 Volts input signal which would be a minimum of 400 ohms for a 0-5 ma output temperature
controller.
2-21.
LINE VOLTAGE CHANGES:
2-22.
120 Volt units
No change in wiring should be made due to the SCR rating limit.
2-23.
240 volt units
(1)
(2)
(3)
2-24.
480 volt units
(1)
12
Conversion to 120 Volt operation
a. Locate transformer T1, it is the larger one on the unit.
b. Remove the jumper that runs between terminals 4 and 16 on T1.
c. Place this jumper between terminals 2 and 14 on T1.
d. Disconnect the remaining wire (or wires) on terminal 16 of T1 and reconnect
it to terminal 14.
e. Locate transformer T2, is the smaller one on the unit.
f.
Remove the wire that is connected to terminal 3 of T2 and connect it to
terminal 2 of T2.
g. The unit will now operate from a 120 Volt line.
Conversion to 208 Volt operation
a. Locate the transformer T1, is the larger one on the unit.
b. Remove the jumper that runs between terminals 4 and 16 on T1.
c. Place the jumper between terminals 3 and 15 on T1.
d. Disconnect the remaining wire (or wires) on terminal 16 of T1 and connect it
to terminal 15 of T1.
e. The unit will now operate from a 208 Volt line.
The 240 Volt units may not be converted to higher Voltage units unless power
semiconductors, fuses, transient suppressors and R105 are changed also.
Conversion to 208 Volt operation
a. Locate transformer T1. It if the larger one on the unit.
b. Remove the jumper that runs between terminals 4 and 5 of T1.
c. Place this jumper between terminals 1 and 5 on T1.
d. Add a new jumper between terminals 3 and 15 on T1.
e. Move the input wire (or wires) from terminal 16 of T1 to terminal 15.
f.
Locate transformer T2. It is the smaller one on the unit.
AMETEK HDR Power Systems
Phase/AMP Series DPA1/DCPA1
Document 9100030
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Table of Contents
Troubleshooting
