Rockwell Automation 1395 DC Drive, 800-1250 Hp, FRN 5.XX-9.30 - Manual (Page 78)

Chapter 4
Installation
4-13
Control Wiring Procedure
1. If an encoder is used, wire it to TB3. Refer to the encoder instruction
manual for proper wiring to the drive.
a) Terminals 19 and 20 connect to differential encoder output A (NOT)
and A.
b) Terminals 17 and 18 connect to differential encoder output B (NOT)
and B.
c) Terminals 15 and 16 are reserved for future use and are not to be
used.
d) Terminal 14 provides + 12VDC (500 mA max.) power to the
encoder. Some encoders limit the + 12VDC supply internally to +
5VDC for the output. Consult the encoder documentation to
determine whether the encoder output signal level is + 12 or +
5VDC. Jumpers J8 - J10 on the Main Control Board must be
properly positioned to correspond to the encoder output voltage.
e) Terminal 13 provides connection to the encoder supply voltage
common (ground).
f) The encoder shield must be connected to the encoder case (ground).
g) The encoder cable must be separate from armature and field leads,
refer to Table 4.A.
h) Maximum encoder cable length is 500 feet (150 meters). For other
lengths contact your Allen-Bradley Sales Representative.
ATTENTION: The Start/Stop circuitry in this drive is
composed of solid-state components. If hazards due to
accidental contact with moving machine components or
unintentional flow of liquid, gas or solids exist, a hardwired
Stop circuit must be used with this drive. For 115VAC control,
this circuitry may be added at terminals 4 and 5 of TB3.
ATTENTION: If Dynamic Braking is used as an alternative
stopping method, Do Not use a hard-wired Stop device that
removes AC line power. This will de-energize the shunt field,
causing a loss of the DB effect and the motor will coast to a
stop. Hazards to personnel may exist if the machine is allowed
to coast to a stop.
ATTENTION: The user has the ultimate responsibility to
determine which stopping method is best suited to the applica-
tion and will meet applicable standards for operator safety.