Rockwell Automation 1901 SyncPro - Manual (Page 12)

1-8 Product Description
1901-UM020C-EN-P – June 2013
Input/Output Descriptive Control
Listing
NOT STOP (I:4/00)
This signal must be maintained high for the SyncPro to operate.
When the signal is taken low, the software identifies this as a normal
stop for the motor.
Important: The SyncPro does NOT have control over stopping
the motor. The main portion of the motor controller performs this
control function.
The NOT STOP signal must be given in parallel to that of the
hardware, i.e. from the same PLC output or push button.
START INPUT(I:4/01)
The rising edge of this signal starts the operation of the SyncPro.
This signal is maintained high for two-wire control or may be
dropped after initial starting if three-wire control is used. In both
cases, this signal controls the START output. After a fault has
occurred, this input must be taken low before another start
command will be recognized.
RUN OUTPUT(O:3/06)
This output is used to control motor starting. It is the START
input conditioned by all permissives. That is to say that this output
will follow the state of the input as long as all permissives are met.
Thus in two-wire control, this output is actually a RUN command
and will stay high until either a fault occurs or a stop is issued. In
three-wire control the output is maintained only as long as the input
is maintained, a fault occurs, or a stop is issued.
EQUIPMENT SHUTDOWN RELAY (ESR) INPUT (I:4/07)
This fault input is used to group all external faults. It notifies the
SyncPro that the system has stopped for an external reason. The
SyncPro will send a message indicating the reason for the stoppage.
In the normal state this signal is held high, going low on a fault
condition. While this signal is low, a start signal will not be accepted.
Typically, all emergency stops or external faults (i.e. overloads,
motor protection relays) will be wired to an ESR relay. This relay
is then fed into the SyncPro for logging and control and also tied
into the hardware to stop the motor.
TRIP (O:3/01)
This output is high during normal conditions. When the SyncPro
detects a fault, the output goes low and the SyncPro stops the
motor. The trip output is typically wired into the ESR circuit. It
will be set high when there are no faults and the FAULT RESET
PB is momentarily raised high.