Specifications – Precision Control Systems 1029C User Manual
Page 6
MODEL 1029C
2
10/19/2007
SPECIFICATIONS
The following specifications apply over an ambient temperature of 0 to 55ºC and a supply voltage of 85% to 110% of the
nominal supply voltage rating.
CONTROL MODE:
Single phase SCR phase-angle control.
FRAME SIZE:
The “[AMPS]A” term within the model number specifies the maximum continuous
RMS current rating at the maximum operating ambient temperature of 55ºC.
RUN COMMAND SIGNAL
AND/OR
IDLE COMMAND SIGNAL:
Command signal
Input Impedance
1/5mA
1200 ohms
4/20mA
300 ohms
0-5Vdc
200K ohms
Potentiometer 200K ohms
(1K, 1/4watt pot recommended for optimum linearity, up to 20K permissible)
The control circuit supplies 5 Vdc to the potentiometer.
Other command signal ranges may be available.
Check with factory for special applications.
If it is desired to use a current command in both the run and idle command
input, the signals must be common sourcing or they must be isolated from
one another. Contact factory for more information.
OPERATING VOLTAGE:
The control transformer installed in this controller has three selectable voltages;
240, 480 & 575 Vac. Other voltages are be available - contact factory for details.
SCR RATINGS:
Peak forward and reverse voltage 1600 volts
SCR SURGE CURRENT
RATINGS :
(peak one cycle
non-repetitive
I
TSM
@ 125°C)
Controller Rating Surge Current Rating
50 & 80 Amp:
1750 Amps Peak
120 Amp:
1900 Amps Peak
160 Amp:
4000 Amps Peak
200 Amp:
4500 Amps Peak
250 Amp:
5200 Amps Peak
300 Amp:
7000 Amps Peak
380 Amp:
10,000 Amps Peak
425 Amp:
13,000 Amps Peak
500 Amp:
10,000 Amps Peak
600 Amp:
13,000 Amps Peak
750 Amp:
16,500 Amps Peak
SCR PROTECTION:
dV/dT rating = 200 volts/microsecond.
dV/dT circuit consists of a capacitor in series with a noninductive resistor. This circuit
is in parallel with the SCRs. The SCRs are protected from voltage transients by a
Metal Oxide Varistor.
RUN/IDLE CONTROL:
A contact closure selects either the run command signal input or the idle command
ELECTRICAL CONNECTIONS:
# of LUGS PER LINE/LOAD
CONNECTIONS
Connectors for line and load are provided for copper wire from 6 ga to 250MCM on
controllers rated 50 to 425 Amps.
Connectors for line and load are provided for copper wire from 1/0 to 500MCM on
controllers rated 500 to 750 Amps.
ELECTRICAL ISOLATION:
50-160 Amp heatsink to supply and load voltage: 2500 Volts Peak
200-750 Amp heatsinks are at line voltage potential.
Command signal to supply and load voltage: 1500 Volts Peak