4.4 Inputs and Outputs
Digital inputs
Term. no.
18
1)
19
1)
27
29
33
par. no.
302
303
304
305
Value:
No function
(NO OPERATION)
[0]
[0]
[0]
[0]
[0]
Reset
(RESET)
[1]
[1]
[1]
[1]
[1]
Coasting stop inverse
(MOTOR COAST INVERSE)
[2]
[2]
[2]
[2]
[2]
Reset and coasting
inverse
(RESET AND COAST INV.)
[3]
[3]
[3]
[3]
[3]
Quick-stop inverse
(QUICK-STOP INVERSE)
[4]
[4]
[4]
[4]
[4]
DC braking inverse
(DC-BRAKE INVERSE)
[5]
[5]
[5]
[5]
[5]
Stop inverse
(STOP INVERSE)
[6]
[6]
[6]
[6]
[6]
Start
(START)
[7]
[7]
[7]
[7]
[7]
Pulse start
(LATCHED START)
[8]
[8]
[8]
[8]
[8]
Reversing
(REVERSING)
[9]
[9]
[9]
[9]
[9]
Reversing and start
(START REVERSING)
[10]
[10]
[10]
[10]
[10]
Start clockwise
(ENABLE FORWARD)
[11]
[11]
[11]
[11]
[11]
Start anti-clockwise
(ENABLE REVERSE)
[12]
[12]
[12]
[12]
[12]
Jog
(JOGGING)
[13]
[13]
[13]
[13]
[13]
Freeze reference
(FREEZE REFERENCE)
[14]
[14]
[14]
[14]
[14]
Freeze output frequency (FREEZE OUTPUT)
[15]
[15]
[15]
[15]
[15]
Speed up
(SPEED UP)
[16]
[16]
[16]
[16]
[16]
Speed down
(SPEED DOWN)
[17]
[17]
[17]
[17]
[17]
Catch-up
(CATCH-UP)
[19]
[19]
[19]
[19]
[19]
Slow-down
(SLOW-DOWN)
[20]
[20]
[20]
[20]
[20]
Ramp 2
(RAMP 2)
[21]
[21]
[21]
[21]
[21]
Preset ref, LSB
(PRESET REF, LSB)
[22]
[22]
[22]
[22]
[22]
Preset ref, MSB
(PRESET REF, MSB)
[23]
[23]
[23]
[23]
[23]
Preset reference on
(PRESET REFERENCE ON)
[24]
[24]
[24]
[24]
[24]
Thermistor
(THERMISTOR)
[25]
[25]
[25]
[25]
Precise stop, inverse
(PRECISE STOP INV.)
[26]
[26]
Precise start/stop
(PRECISE START/STOP)
[27]
[27]
Pulse reference
(PULSE REFERENCE)
[28]
Pulse feedback
(PULSE FEEDBACK)
[29]
Pulse input
(PULSE INPUT)
[30]
Selection of Setup, lsb
(SETUP SELECT LSB)
[31]
[31]
[31]
[31]
[31]
Selection of Setup, msb (SETUP SELECT MSB)
[32]
[32]
[32]
[32]
[32]
Reset and start
(RESET AND START)
[33]
[33]
[33]
[33]
[33]
Pulse counter start
(PULSE COUNTER START)
[34]
[34]
Table 4.2 Output for Digital Inputs 18, 19, 27, 33- Parameter 302, 303, 304, 307
1 All functions on terminals 18 and 19 are controlled by an interrupter, which means that the repetitive accuracy of the response time is constant.
Can be used for start/stop, set-up switch and especially for changing digital preset, i.e. to obtain a reproducable stop point when using creep
speed. For further information, see VLT 2800 Precise Stop Instruction.
Function:
In the
parameters 302-307 Digital inputs
it is possible to
select between the different enabled functions related to
the digital inputs (terminals 18-33).
Description of choice:
Select
No operation
if the frequency converter is not to
react to signals transmitted to the terminal.
Reset
resets the frequency converter after an alarm;
however, a few alarms cannot be reset (trip locked)
without first disconnecting the mains supply and
reconnecting it. See
for more details. Reset is
activated on the leading edge of the signal.
Coasting stop inverse
is used for making the frequency
converter release the motor immediately (output
Programming
Design Guide
84
Danfoss A/S © Rev. May/2014 All rights reserved.
MG27E402
4
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