EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company

Terminal function assignment and data setting
• Multi-frequency (0 to 15 steps) --SS1, SS2, SS4, SS8 (Function code data = 0 to 3)
The combination of the ON/OFF states of digital input signals SS1, SS2, SS4 and SS8 selects one of 16 different
frequency commands defined beforehand by 15 function codes C05 to C19 (Multi-frequency 0 to 15). With this,
the inverter can drive the motor at 16 different preset frequencies. Refer to C05 through C19.
• Acceleration / deceleration time --RT1, RT2 (Function code data = 4 and 5)
Selects acceleration / deceleration times using terminal functions, see page 4-38.
• Enable 3-wire operation –HLD (Function code data = 6)
Turning this terminal command ON self-holds the forward FWD or reverse REV run command, to enable 3-wire
inverter operation. Refer to F02.
• Coast to a stop -- BX (Function code data = 7)
Turning this terminal command ON immediately shuts down the inverter output so that the motor coasts to a stop
without issuing any alarms.
• Reset alarm -- RST (Function code data = 8)
Turning this terminal command ON clears the ALM state--alarm output (for any fault). Turning it OFF erases the
alarm display and clears the alarm hold state.
When activating the RST command ON, keep it ON for 10 ms or more. This command should be kept OFF for the
normal inverter operation.
• Enable external alarm trip -- THR (Function code data = 9)
Turning this terminal command OFF immediately shuts down the inverter output (so that the motor coasts to a
stop), displays the alarm 0h2, and outputs the alarm relay (for any fault) ALM. The THR command is self-held, and
is reset when an alarm reset takes place.
Use this alarm trip command from external equipment when immediately shutting down the inverter
output in the event of an abnormal situation in peripheral equipment.
• Ready for jogging –JOG (Function code data = 10)
This terminal command is used to jog or inch the motor for positioning a work piece. Turning this command ON
makes the inverter ready for jogging. Refer to C20.
• Select frequency command 2/1 -- Hz2/Hz1 (Function code data = 11)
Turning this terminal command ON and OFF switches the frequency command source between frequency
command 1 (F01) and frequency command 2 (C30). Refer to F01.
• Select motor 2 -- M2 (Function code data = 12)
The combination of digital input terminal commands M2, M3 and M4 switches to any of the 1st to 4th motors.
When the motor is switched, the function code group with which the inverter drives the motor is also switched to
the one corresponding to the motor. Refer to A42.
4-73