nord NORDAC PRO SK 511E Series - Page 126

SK 54xE – Users Manual for Frequency Inverters
126 BU 0505 EN-3021
List of the possible functions of digital inputs
Value
Function
Description
Signal
00
No function
Input switched off.
---
01
Enable right
The inverter delivers an output signal with the rotation field right if a positive
setpoint is present. 0 → 1 Flank (P428 = 0)
High
02
Enable left
The inverter delivers an output signal with the rotation field left if a positive
setpoint is present. 0 → 1 Flank (P428 = 0)
High
If the drive is to start up automatically when the mains is switched on (P428 = 1) a permanent High level for enabling must be provided (bridge
between DIN1 and the control voltage output).
If the functions "Enable right" and "Enable left" are actuated simultaneously, the FI is blocked.
If the frequency controller is in fault status but the cause of the fault no longer exists, the error message is acknowledged with a 1 → 0 flank .
03
Change of rotation direction
Causes the rotation field to change direction, combined with Enable right or left.
High
04 Fixed frequency 1
1
The frequency from P429 is added to the actual setpoint value. High
05
Fixed frequency 2
1
The frequency from P430 is added to the actual setpoint value.
High
06
Fixed frequency 3
1
The frequency from P431 is added to the actual setpoint value.
High
07
Fixed frequency 4
1
The frequency from P432 is added to the actual setpoint value.
High
If several fixed frequencies are actuated at the same time, then they are added with the correct sign. In addition, the analogue setpoint (P400)
and if necessary the minimum frequency (P104) are added.
08
Switch-over of parameter
sets
First Bit of the parameter set switch over, selection of the active parameter set
1…4 (P100).
High
09
Hold frequency
During the acceleration or deceleration phase, a Low level will cause the actual
output frequency to be "held". A high level allows the ramp to proceed.
Low
10
Block voltage
2
The FI output voltage is switched off; the motor runs down freely.
Low
11
Quick stop
2
The FI reduces the frequency according to the programmed fast stop time from
P426.
Low
12
Error acknowledgement
2
Error acknowledgement with an external signal. If this function is not
programmed, an fault can also be acknowledged by a low enable setting
(P506).
0

1
Flank
13
PTC input
2
Analog evaluation of signal present. Switching threshold approx. 2.5 V, Switch-
off delay = 2 sec, warning after 1 sec.
NOTE: Function 13 can only be used via DIN 5 up to SK 535E, sizes 1 - 4!
For SK 54xE and sizes above Size 5, there is a separate connection which
cannot be deactivated. If the motor is equipped with a thermistor, for these
devices both terminals must be bridged in order to deactivate the function
(status as delivered).
level
14
Remote control
2, 4
With Bus system control, low level switches the control to control via control
terminals.
High
15
Jog frequency
1
The fixed frequency value can be adjusted using the HIGHER/LOWER and
ENTER keys (P113), if control is via the ControlBox or ParameterBox.
High
16
Motor potentiometer
As in setting 09, however, the frequency is not maintained below the minimum
frequency P104 and above the maximum frequency P105.
Low
17
Para. Set Switchovr. 2
Second Bit of the parameter set switch over, selection of the active parameter
set 1…4 (P100).
High
18 Watchdog
2
Input must see a High flank cyclically (P460), otherwise error E012 will cause a
shutdown. Function starts with the 1st high flank.
01
Flank
19
Setpoint 1 on/off
Analog input switch-on and switch-
off 1/2 (high = ON) The low signal sets the
analog input to 0 % which does not lead to shut-
down when the minimum
frequency (P104) > than the absolute minimum frequency (P505).
High
20 Setpoint 2 on/off
21
Fixed frequency 5
1
The frequency from P433 is added to the actual setpoint value.
High
22
... 25
Reserved for POSICON (BU 0510)
26 ... 29 impulse functions:
Description below:
30 Disable PID Switching the PID controller / process controller function on and off (high = ON) High
31
Disable right running
2
Blocks the >Enable right/left< via a digital input or Bus control. Does not depend
on the actual direction of rotation of the motor (e.g. following negated setpoint).
Low
32
Disable left running
2
Low
33
... 42 impulse functions:
Description below (only SK 500E … 535E).