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E-AC Drive Hardware Installation Guide Chapter 2 – Installation
FAULT OUTPUT
The E-AC Drive can signal, through its fault output, that it has detected a
fault. Internally, the terminals FAULT+ (C) and FAULT- (E) connect to the
open collector and open emitter, respectively, of an optically isolated
transistor. The transistor acts like a switch: it conducts when the drive is
functioning normally; it does not conduct when any of the following
conditions exist.
• No power is applied to the drive
• AC line voltage is too low (less than 95VAC)
• Drive temperature is higher than 55°C (131°F)
• Drive detects a short circuit in motor or motor cable
Fault output specifications are:
V
CE
: 30VDC
V
CESAT
: 1 VDC
Collector Current: 40 mA minimum
Dissipation: 40 mW maximum
Optically Isolated: Yes
RESET INPUT
The reset input provides a means for you to reset the E-AC Drive, without
actually cycling power. To activate the reset input, apply a positive voltage
to RESET+ with respect to RESET– when the motor is not moving. The reset
will not be complete until 0.7 seconds after the voltage is removed. A reset
has the same effect on the drive as cycling power:
• DIP switch settings are loaded into the drive for configuration.
• Existing faults are cleared.
• Current to the motor is turned off while voltage is applied to the reset input.
• After voltage is removed from the reset input, the drive’s soft start procedure
will ramp current up to the startup state. The motor will move to the nearest
pole position.
• After voltage is removed from the reset input, there will be a 0.7 second
delay before reset is complete, and normal operations can continue.
Reset input specifications are:
Input Current: 2.5 mA minimum
30 mA maximum
Input Voltage: 3.5V minimum (min. required for on or high signal)
13V maximum
5V maximum reverse voltage
Reset Voltage Pulse: 250 nanosecond minimum pulse width
Active Level: While voltage is applied, reset occurs.
When voltage is removed, normal operations resume.
Reset Delay: 0.7 second delay until reset is complete, after voltage is
removed from input.
Optically Isolated: Yes