Nord Drivesystems NORDAC FLEX SK 200E Series User Manual page 182

NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
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P436 Dig. out. hysteresis
[-01]
[-02]
(digital output hysteresis)
[-01] =
1 ... 100 %
{ 10 } [-02] =
Difference between switch-on and switch-off point to prevent oscillation of the output signal.
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Watchdog time
P460
(time watchdog)
0.1 ... 250.0 = The time interval between the expected watchdog signals (programmable function
-250.0 ... 250.0 s
{ 10.0 }
0.0 = customer error: As soon as a high-low flank or a low signal is detected at a digital input
-250.0 ... -0.1 = rotor motion watchdog: Rotor motion watchdog is active in this setting. The
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P464 Fixed frequency mode
(fixed frequency mode)
0 ... 1 This parameter determines the form in which fixed frequencies are to be processed.
{ 0 } 0 = Add to main setvalue: Fixed frequencies and the fixed frequency array behave additively to
1 = Equal main setvalue: Fixed frequencies are not added, neither together nor to main analog
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182
Digital output 1, Digital output 1 of the variable frequency drive
Digital output 2, Digital output 2 of the variable frequency drive SK 2x0E
of the digital inputs P420...). motor PTC") the variable frequency drive is to
immediately reduce the speed to a specific speed (e.g. by means of an active fixed
frequency). If this time interval elapses without a pulse being registered, switch-off
and error message E012 are actuated.
(function 18) the VFD switches off with error message E012.
time is defined by the amount of the set value. There is no watchdog message
when the device is switched off. After each enable, a pulse must first come before
the watchdog is activated.
each other. That means they are added to each other or to an analog setpoint in the limits
assigned as per P104 and P105.
setpoints.
If for example, a fixed frequency is switched to an existing analog setpoint, the analog
setpoint will no longer be considered.
Programmed frequency addition or subtraction with an analog input value or a bus setpoint
is still possible and valid, as is the addition to the setpoint of a motor potentiometer function
(function of digital inputs: 71/72).
If several fixed frequencies are selected simultaneously, the frequency with the highest value
has priority (e.g.: 20>10 or 20>-30).
Note:
The highest active fixed frequency is added to the setpoint of the motor potentiometer if
functions 71 or 72 are selected for 2 digital inputs.
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BU 0200 en-US-3118