Yaskawa V74X Drives - Manual (Page 8)

8
Drive
Specifications
Section 1
SECTION B. All Drives (Continued)
Motor overload protection Electronic thermal overload relay
Motor coasts to stop at approx. 250%
Instantaneous overcurrent
of drive current
Motor coasts to stop after 1 min. at 150% of
Overload
drive rated current (7)
Motor coasts to stop if DC bus voltage exceeds
Overvoltage
410VDC (230V), 820VDC (460V)
Motor coasts to stop when DC bus voltage is
Undervoltage
210VDC or less (230V), 400VDC or less (460V)
The following operations are selectable:
Momentary Power Loss
• Not provided (stops if power loss is 15 ms or longer)
• Automatic restart at recovery from 0.5 sec. power loss
• Automatic restart
Heatsink overheat Protected by electronic circuit
Independently programmable during accel and
Stall prevention level
constant-speed running. Selectable during decel.
Ground fault Protected by electronic circuit (overcurrent level)
ON until the DC bus voltage becomes 50V or less.
Power charge indication RUN lamp says ON or digital operator LED stays ON.
(Charge LED is Provided for 400V)
Cooling Fan Fault Protected by electronic circuit
Run/stop input 2-Wire or 3-Wire
Seven of the following input signals are selectable:
Forward/reverse run (3-Wire sequence), fault reset,
external fault (NO/NC contact input), multi-step speed operation,
Multi-function input
Jog command, accel/decel time select,
external baseblock (NO/NC contact input, speed search command,
accel/decel hold command, LOCAL/REMOTE selection,
communication/control circuit terminal selection,
emergency stop fault emergency stop alarm
Following output signals are selectable
(1 NO/NC contact output, 2 photo-coupler outputs):
Fault, running, zero speed, at frequency, frequency detection
Multi-function output (output frequency or set value), during overtorque detection,
during undervoltage detection, minor error, during baseblock, operation mode,
inverter run ready, during fault retry, during UV, during speed search,
data output through communication
Analog monitor 0 to +10VDC output, programmable for output frequency or output current
Protectiv
e Functions
Other Functions
Input signals
Output signals
IG.V7.01_new format.qxd:IG.V7.01_new format.qxd 8/21/07 2:24 PM Page 8