Rockwell Automation 1336 3-20HP FRN 1.01-3.01 - Manual (Page 48)

6
Chapter
6-1
Wiring
!
ATTENTION: Do not proceed without reading the information on this
page. Failure to understand procedures and hazards may result in personal
injury or equipment damage. General Wiring Procedures
!
ATTENTION: An incorrectly applied or installed system can result in
component damage or reduction in product life. The most common causes
are:
•
Wiring the AC line to drive output or control terminals.
•
Improper bypass or output circuits not approved by Allen-Bradley.
•
Output circuits which do not connect directly to the motor.
•
Incorrect or inadequate AC supply.
•
Excessive ambient temperature.
Contact Allen-Bradley for assistance with application or wiring.
1. The National Electrical Code requires that a circuit breaker or fusible disconnect
switch be provided in the drive branch circuit. Providing drive input fusing
alone is not sufficient to meet NEC guidelines. The 1336 does not provide this
requirement. Selection of a branch circuit breaker or fusible disconnect should
be based on the drive input current rating. Refer to the Terminal Block TB1
Wiring sections in this chapter for mandatory AC input fusing recommendations
for drive short circuit protection.
2. The National Electrical Code and local regulations govern the installation and
wiring of the 1336. All input and output power wiring, control wiring and
conduit must be brought through the drive conduit entry holes provided on the
enclosure. Connections to the drive must be made as shown in the following
sections and in accordance with the drive nameplate, National Electrical Code
requirements and any additional interconnection diagrams packed with the
drive.
3. The voltage on each phase of the incoming line to the drive must match the
drive input rating. Verify the drive rating by referring to the input voltage listed
on the drive nameplate. If the incoming line voltage is out of this tolerance,
equipment may be damaged or fail to operate.
4. If multiple drives are used, do not use common cabling for AC input or output
leads. If multiconductor cable is used, separate 3-conductor input and output
cable for each drive must be used.
5. All signal wiring must be run separate from power or control wiring. Verify that
shielded cable and/or conduit is used if indicated on any interconnection
diagrams or in the following sections. If shielded cable is required, shields must
be grounded at the drive end only at one of the drive ground lugs provided.
6. Nearby relays, solenoids or brake coils can produce electrical noise transients
and cause erratic drive behavior. Transient suppression networks must be added
across the coils of these devices.