3 Contactor Full Feature Bypass with Disconnect Package (Style B/N) 2-9
Rockwell Automation Publication 22C-IN002E-EN-P - November 2010
Customer Connections
The 3 Contactor Full Feature Bypass with Disconnect Package is set up to
accommodate the following customer supplied contacts. Contacts should be
rated for 120V AC.
Interlock
The “Interlock” input functions as an Enable input when operating in either
Drive or Bypass mode. Opening of the “Interlock” input (T31-T32) will
prevent the drive/motor from running. T31-T32 are shipped jumpered
together (with a jumper wire) from the factory. If it is desirable to use the
“Interlock” input, this jumper wire can be removed and appropriate
customer contacts wired in. If a valid “Autostart” or “Bypass” contact is
present, the drive/motor will immediately run upon the closing of the
“Interlock” input.
Freeze/Fire Stat
The “Freeze/Fire Stat” input functions as a system fault input when
operating in either Drive or Bypass mode. Opening of the “Freeze/Fire Stat”
input (T31-T33) will prevent the drive/motor from running. T31-T33 are
shipped jumpered together (with a jumper wire) from the factory. If it is
desirable to use the “Freeze/Fire Stat” input, the jumper wire can be
removed and appropriate customer contacts wired in. If the “Freeze/Fire
Stat” input opens while operating in Drive mode, the drive will fault and
require a manual reset to restart once the input closes. If the “Freeze/Fire
Stat” input opens while operating in Bypass mode, the motor will coast to a
stop and immediately run upon the re-closing of the input.
Autostart
The “Autostart” input is used to remotely start the drive when SS1 is in the
DRIVE position and SS2 is in the AUTO position. A closed input to
terminals 34-35 will start the drive.
Bypass
The “Bypass” input is used to remotely start the motor across the 3-phase
AC line when SS1 is in the BYPASS position and SS2 is in the AUTO
position. A closed input to terminals 34-36 will start the motor.
See Figure 2.2
for details on selector switch location.
Purge
A “Purge” input can be wired to terminals 37-38. When this input is closed,
the motor will run at the Purge Frequency, which is defined by Parameter
A141 [Purge Frequency], assuming the following conditions exist.
• SS1 is either in the DRIVE or BYPASS position.
• SS2 is either in the HAND or AUTO position if Jumper P1 on the Bypass
Control Panel (CP1) is in position A.
• SS2 is in the HAND, MOTOR OFF or AUTO position if Jumper P1 on
the Bypass Control Panel (CP1) is in Position B.
• Interlock wired to terminals 31-32 is closed.
• Freeze/Fire Stat wired to terminals 31-33 is closed.
ATTENTION: A Purge command will take precedence over a
Stop command from the Comm Port/Network. Insure that
another stop method is available if stopping is necessary during a
purge.
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