- 52 - Aries User Guide
•
Fault output is optically isolated with both Collector (+) and Emitter
(–) available.
No Optical Isolation
The following describes which I/O signals are
not
optically isolated:
•
Step and Direction inputs are 5V differential compatible (RS-422
logic level compatible.
•
Encoder output signals are non-isolated RS-422 compatible
differential drivers referenced to DGND.
•
RS-485 is non-isolated RS-485 compatible differential signals
referenced to DGND.
•
AIN+ Analog input is single-ended non-isolated referenced to AIN–,
and common mode referenced to DGND.
Fault Operation
When the Aries Drive is enabled and there are no fault conditions, the Fault
circuit is closed (conducting). However, the following circumstances can trip
the Fault circuit: a fault condition is present (see “Error Messages” on page
144
); the Enable circuit is open (see Figure 34); or, Mains power is removed
from the drive.
You can use the LED status indicators to help identify internal drive faults.
For more information, see Table 23.
Drive Condition
Fault Output
Enabled
Closed (conducting)
Faulted
Open
No AC power on L1 and L2*,
or drive not enabled
Open
* Mains Control power on C1 and C2 does not affect the fault circuitry. With mains power
applied to C1 and C2, the fault circuit remains open if AC power is
not
applied to the L1
and L2 terminals.
Table 28 Fault Output Operation
Figure 33
DRIVE I
/
O
connector, female drive connector pinout
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