Specifications

69
The open-collector output circuit is a current-sinking type rated at 30 VDC and 40 mA
maximum. An external power supply (30 VDC max.) must be used to power the open-
collector outputs. The drive does not have a dedicated power supply for the open-collector
outputs.
53 TB15 OUT (TB-15 OPEN COLLECTOR OUTPUT)
This parameter sets the open-collector output indication for terminal TB-15. It has the same
functionality as Parameter 52 - TB14 OUT above.
54 RELAY (RELAY FUNCTION)
The control board has one set of FORM C contacts that can be programmed for the same
indications as the open-collector outputs described above. Refer to Section 6.2.5 - AC400
STATUS OUTPUT RELAYS.
The FORM C relay contacts on TB-16, 17, and 18 are rated 2 Amps at 28 VDC or 120 Vac.
Control wiring diagrams show relays in the rest state (coils NOT energized).
55 TB5B LOSS (LOSS OF FOLLOWER ACTION)
This parameter selects the action taken by the drive if the follower signal is lost at TB-5B.
This function is only active if the follower signal is 4-20 mA. The signal is considered lost if
it falls below 2 mA.
FAULT The drive will trip into a FOLLOWER fault condition.
SP #4 The drive will operate at the speed programmed into Parameter 4 -
SPEED #4.
57 SERIAL (SERIAL COMMUNICATIONS)
This parameter is used to activate serial communications. When using this feature, the drive
can communicate with a personal computer (PC), programmable logic controller (PLC), or
other external device that utilizes RS-485 serial communications for control. The serial
interface may be used to read present parameter settings (uploading to the control device),
write new parameter settings (downloading from the control device), monitor present drive
activity, and control drive activity. The following settings are available: