 Programmable
for operation from 230, 380 or 460 VAC 3 phase line input
Insensitive
to phase rotation of A.C. line input
Full
10 ampere rated field supply with provisions for interfacing
the Field Loss circuit to an external field supply or regulator
Automatic
Field Economy with customer adjustable "delay after stop" to
reduce idling field voltage by 35%
Current
transformers for isolated armature current sensing
Impedance
isolation for armature voltage sensing
Electrically
isolated power modules rated at 1400 volts PIV and 1000 volts/microsecond
DVDT
Individual
SCR R-C networks for transient protection
Semiconductor
line fuses for power circuit protection
Thermostatically
controlled fan (on forced ventilated models) to extend fan life
Latching
FAULT logic for safety shutdown with form "C" contact
output and LED indicators for Phase Loss, Field Loss, Heatsink
Overtemp and Overcurrent.
5
jumper selectable armature current ranges for each model to match
motor rated armature current
Timed
Foldback current limiting and Overcurrent Trip with four programmable
time periods of 15/75, 30/150, 45/225 and 60/300 seconds. The
first number specifies time allowed at 150% before current "fold
back" to 112% current. Second number specifies time of
continued operation at 112% before Overcurrent Trip occurs.
Independent
control of positive and negative motor torque from external pot
or voltage reference (negative torque on E12000 regen model only)
Lockout
of forward and reverse direction of motor rotation from external
contact (reverse on E12000 regen models only)
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Independently
adjustable linear acceleration and deceleration from 1 to 60
seconds for forward direction and reverse directions (reverse
on E12000 regen models only)
Speed
feedback is jumper selectable for Armature Voltage, D.C. Tachometer
voltage (7, 50 or 100 VDC/1000 RPM), A.C. Tachometer voltage
(45 or 90 VAC/1000 RPM) or Digital Encoder (300 PPR)
D.C.
Tachometer voltage is insensitive to polarity
12
VDC @ 100mA rated power supply for encoder excitation
Summing
input for auxiliary input signals with on-board trim pot. for
scaling and jumper selection for polarity
Buffered
armature current signal output
Buffered
velocity signal output
Buffered
velocity reference signal output
Inner
current loop type control circuit for responsive and precise
control of motor speed and torque
115
VAC logic for customer operator interface
Zero
speed logic for controlled ramp-to-stop (braking torque supplied
by E12000 regen models only)
Jog
Delay circuit to allow rapid jogging without de-energizing armature
contactor to give longer contactor life
LED
indicators Run, Jog, Zero Speed and Foldback for monitoring operating
status of the drive
All
important adjustment potentiometers mounted on de-pluggable "Personality
Board" to allow Control board replacement while preserving
setup parameters. Critical pots are multiturn and normal customer
adjustments are single turn with a knob
Multilevel
construction with hinged cover and sub- panel allows ready access
to all printed circuit boards, fuses and power components for
ease of service and replacement
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