Specifications – Precision Control Systems 3629C User Manual
Page 7
MODEL 3629C
3
04/10/2007
SPECIFICATIONS
The following specifications apply over an ambient temperature range of 0 to 55°C and a supply voltage of 85% to 110%
of the nominal supply voltage rating.
Control Mode:
Three-phase in line, Three-phase inside delta, 4-wire wye or DC. 6 SCR, phase
angle control of the RMS or average load voltage. External feedback is available.
section.
Command Signal:
Input signal
Input Impedance:
0-5Vdc
200K ohms
0-10Vdc
200K ohms
Potentiometer
200K ohms
4/20mA
300 ohms
A 1K to 20K potentiometer is excited by 5Vdc, supplied by the circuit. Other input
signals may be available. Check with factory for special applications.
Control Range:
0 to 98% of line voltage.
Linearity:
Output will be linear within 2% of span over entire range of control.
Current Limit Range:
Adjustable from 20% to 125% of frame current as specified in the "(Amps)A" term
within the model number. If no IL term is specified when ordering, then current limit
is factory set to 105% of frame current rating.
Over Current Trip Range:
Adjustable from 30% to 300% of frame current as specified in the "(Amps)A" term
within the model number. If no OCT term is specified when ordering, then over
current trip is factory set to 175% of frame current rating.
Zero and Span Adjustments:
Multi-turn potentiometers allow zero and span adjustments of ±25% of span.
Dissipation:
Approximately 1.5 watts per amp of current per phase dissipated by the controller.
Supply Voltage:
208, 240, 380, 415, 480, or 575Vac, 3 phase, @ 50/60 Hertz. Other operating
voltages may be available by special order.
Environment:
Operating temperature 0 to 55°C (32 to 132°F).
Storage temperature: -40 to 85°C (-40 to 176°F).
Humidity: 0 to 95%, non-condensing.
Electrical Isolation:
Heat sink to supply
Load voltage on units rated 50 to 160 Amps:
2500 volts peak.
Command signal to supply and load voltage:
2500 volts peak.
Status Indicators:
LINE OK: Indicates power on all three phases and phase lock capture OK.
COMMAND: The intensity of this LED is proportional to the command signal.
LINE A, LINE B, LINE C: The intensity of these three LEDs is proportional to the
current in each leg.
SHORTED SCR: Indicates when an SCR has failed in the shorted mode.
OVER CURRENT: Indicates excessive current has occurred.
CURRENT LIMIT: Indicates when unit is in current limit mode.
Ready Signal:
An open drain Field Effect Transistor provides a signal which may be used to control
an LED, a relay or a logic level shift. This signal will remain high if conditions exist
within the controller that prevent the controller from providing a controlled output.
).
Cooling:
Convection cooling on 50 amp unit.
Forced air fan cooling on all other models.