Lenze SCF frequency inverter - Manual (Page 22)

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Lenze 13466146 EDBSF01 v24 EN
3 Installation
NOTE
If TB-13A, TB-13B, and TB-13C are all programmed to select speed references, and two
or three of the terminals are closed to TB-2, the higher terminal has priority and will
override the others. For example, if TB-13A is programmed to select 0-10VDC, and
TB-13C is programmed to select PRESET SPEED #3, closing both terminals to TB-2 will
cause the drive to respond to PRESET SPEED #3, because TB-13C overrides TB-13A.
The exception to this is the MOP function, which requires the use of TB-13B and TB-13C.
This leaves TB-13A to be used for some other function. If TB-13A is programmed for a
speed reference, and TB-13A is closed to TB-2, TB-13A will override the MOP function.
3.5.7 Analog Output Signals
Terminal TB-30 can provide a 0-10 VDC or a 2-10 VDC signal proportional to output frequency or
load, and TB-31 can provide the same signals proportional to load only. The 2-10 VDC signal can
be converted to a 4-20 mA signal using a resistor in series with the signal such that the total load
resistance is 500 Ohms. Refer to Parameters 08 and 09 in Section 4.4 - Description of Parameters.
NOTE
These analog output signals cannot be used with “loop-powered” devices that derive
power from a 4-20 mA signal.
3.5.8 Drive Status Digital Outputs
There are two open-collector outputs at terminals TB-14 and TB-15. The open-collector circuits are
current-sinking types rated at 30 VDC and 50 mA maximum.
The open-collector outputs can be programmed to indicate any of the following: RUN, FAULT, INVERSE
FAULT, FAULT LOCKOUT, AT SPEED, ABOVE PRESET SPEED #3, CURRENT LIMIT, AUTO SPEED MODE, and
REVERSE. Refer to Parameters 06 and 13 in Section 4.4 - Description of Parameters.
The diagram below illustrates how the 12 VDC power supply at TB-11 can be used with the open-
collector output to drive an external relay:
TB-11
TB-14
SC
F T
ERMI
NAL
ST
RI
P
RELAY COIL
DIODE SNUBBER
(1N4148 or Equivalent)