NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
168 BU 0200 en-3118
Pos: 42 3 /Anlei tung en/El ektr onik/FU und Star ter /5. Par a meter/ Par a meter auf list ung (P0 00 . ..) /P4 00- P499/ Para meter P4 01 – Mo dus Anal og-Ei ngang [SK 2x xE] @ 2\mod_1346931798033_388.docx @ 42429 @ @ 1
P401 [-01]
...
[-06]
Mode analogue in
(Mode analogue input)
S
0 ... 5
{ all 0 }
This parameter determines how the frequency inverter reacts to an analogue signal which is
less than the 0% adjustment (P402).
External Analogue input 1, AIN1 of the first I/O extension
External Analogue input 2, AIN2 of the first I/O extension
[-03]
External A.in. 1 2nd IOE, "External analogue input 1 2nd IOE“, AIN1 of the second
I/O extension
[-04]
External A.in. 2 2nd IOE "External analogue input 2 2nd IOE, AIN2 of the second I/O
extension
[-05] Analogue input 1, Analogue input1 (only SK 200E, SK 210E)
[-06] Analogue input 2, Analogue input 2 (only SK 2x0E)
Pos: 42 4 /Anlei tung en/El ektr onik/FU und Star ter/5 . Par ameter/ Par ameter aufli stung (P000 .. .)/P4 00-P4 99/Par amet er P401 – Modus An alog einga ng - Mod uslis te @ 2\mod_1355489392924_388.docx @ 52378 @ @ 1
0 = 0 – 10V limited: An analogue setpoint smaller than the programmed adjustment 0% (P402)
does not lead to undershooting of the programmed minimum frequency (P104), i.e. it does
not result in a change of the direction of rotation.
1 = 0 – 10V: If a setpoint smaller than the programmed adjustment 0% (P402) is present, this can
cause a change in direction rotation. This allows rotation direction reversal using a simple
voltage source and potentiometer.
E.g. internal setpoint with rotation direction change: P402 = 5 V, P104 = 0 Hz, Potentiometer
0-10 V Rotation direction change at 5 V in mid-range setting of the potentiometer.
At the moment of reversal (hysteresis = ±
P505), the drive stands still when the minimum
frequency (P104) is smaller than the absolute minimum frequen
cy (P505). A brake that is
controlled by the FI will have entered the hysteresis range.
If the minimum frequency (P104) is greater than the absolute minimum frequency (P505),
the drive reverses when the minimum frequency is reached. In the hysteresis range ± P104,
the FI supplies the minimum frequency (P104), the brake controlled by the FI is not applied.
2 = 0 – 10V monitored: If the minimum
adjusted setpoint (P402) is
undershot by 10% of the difference
value from P403 and P402, the FI
output switches off. Once the
setpoint is greater than [P402 - (10%
* (P403 - P402))], it will deliver an
output signal again. With the change
to firmware version V 2.0 R0 the
behaviour of the FI changes in that
the function is only active if a
function for the relevant input has
been selected in P400
f / Hz
P104
(fmin)
P105
(fmax)
P403 = 10.0V
P402 = 2.0V
= 8.0V
U/V
OFF = 2.0V - 10% * 8.0V = 1.2V
E.g. setpoint 4-20 mA: P402: Adjustment 0 % = 1 V; P403: Adjustment 100 % = 5 V; -10 %
corresponds to -0.4 V; i.e. 1...5 V (4...20 mA) normal operating zone, 0.6...1 V = minimum
frequency setpoint, below 0.6 V (2.4 mA) output switches off.
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