Rockwell Automation 1901 SyncPro - Manual (Page 14)

1-10 Product Description
1901-UM020C-EN-P – June 2013
Input/Output Descriptive Fault Detection
Listing (cont.)
FIELD VOLTAGE RELAY INPUT (I:4/03)
When the signal is low, it indicates a lack of field voltage. This
input is monitored for a fault condition only while starting, prior to
applying the field. Tie this input high if it is not used. When this
contact is high, it verifies that the static exciter is providing an
appropriate DC voltage.
FIELD CURRENT RELAY INPUT (I:4/04) (OPTIONAL)
When the signal is low, it indicates a lack of field current. This
input is monitored for a fault condition after the field has been
applied. Tie this input high if it is not used. This optional input
verifies there is DC current flowing from the static exciter to the
motor field. It is redundant since the power factor trip feature will
trip if the field current is lost.
POWER FACTOR (I:2/0)
The signal supplied to the SyncPro is from the Phase Angle
Transducer, representing a power factor of zero (0) lagging to zero
(0) leading respectively. Note that the SyncPro firmware has been
tailored to this specific transducer. No substitution is allowed.
SLIP GENERATOR POWER (I:1/01)
This fault input is monitored during idle and starting periods. It is
normally held high by the power supply to the Slip Pulse
Generator.
SLIP GENERATOR NEGATIVE (-) (I:1/00)
Connect to the negative terminal (N) of the Slip Pulse Generator.
SLIP GENERATOR POSITIVE (+) (I:1/02)
Connect to the positive terminal (P) of the Slip Pulse Generator.