Nord Drivesystems BU 0500, User Manual

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SK 500E – Users Manual for Frequency Inverters
126 BU 0500 EN-3021
P431
Fixed frequency 3
(Fixed frequency 3)
P
-400.0 ... 400.0 Hz
{ 0.0 }
For a description of the function of the parameter, see P429 > Fixed frequency 1 <
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P432
Fixed frequency 4
(Fixed frequency 4)
P
-400.0 ... 400.0 Hz
{ 0.0 }
For a description of the function of the parameter, see P429 > Fixed frequency 1 <
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P433
Fixed frequency 5
(Fixed frequency 5)
P
-400.0 ... 400.0 Hz
{ 0.0 }
For a description of the function of the parameter, see P429 > Fixed frequency 1 <
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P434
Relay 1 function
(Function of output 1 (Relay 1
–
MFR1))
P
0 ... 39
{ 1 }
Control terminals 1/2: The settings 3 to 5 and 11 work with a 10% hysteresis, i.e. the relay
contact closes (Function 11 opens) when the limit value is reached and opens (function 11 closes)
when a 10% smaller value is undershot. This behaviour can be inverted with a negative value in
P435.
Various functions can be programmed. These can be seen in the following table.
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List of possible functions of the relays and digital outputs
Value Function Description Signal*
00 No function Input switched off. Low
01 External brake For the control of a mechanical brake on the motor. The relay switches at a
programmed absolute minimum frequency (P505). For typical brakes a setpoint
delay of 0.2 … 0.3 seconds should be programmed (see also P107).
A mechanical brake may be directly switched by AC current. (Note the technical
specification of the relay contacts!)
High
02 Inverter working the closed relay contact indicates voltage at the inverter output (U - V - W) (also DC
run-
on(→ P559)).
High
03 Current limit Based on the setting of the motor rated current in P203. This value can be adjusted
with the standardisation (P435). High
04 Torque current limit Based on motor data settings in P203 and P206. Signals a corresponding torque
load on the motor. This value can be adjusted with the standardisation (P435). High
05 Frequency limit Based on motor nominal frequency setting in P201. This value can be adjusted with
the standardisation (P435). High
06 Setpoint reached indicates that the FI has completed the frequency increase or decrease. Setpoint
frequency = actual frequency! From a difference of 1 Hz

Setpoint not reached -
contact opens.
High
07 Fault General fault message, fault is active or not yet acknowledged.

Error: contact opens, ready: contact closes
Low
08 Warning General warning - a limit value was reached that could lead to a later shutdown of
the FI. Low
09 Overcurrent warning At least 130% of the nominal FI current was supplied for 30 seconds. Low
10 Motor overtemperature
warning Motor overtemperature (warning): The motor temperature is evaluated via the PTC
input or a digital input.

Motor is too hot. This warning is given immediately,
overheating switch-off after 2 seconds.
Low
11 Torque current limit
active Torque current limit/Current limit active (warning): The limiting value in P112 or P536
has been reached. A negative value in P435 inverts the reaction. Hysteresis = 10 %. Low