nord NORDAC PRO SK 511E Series - Page 130

SK 54xE – Users Manual for Frequency Inverters
130 BU 0505 EN-3021
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. Thi
s 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
12
Value of P541
The output can be set using parameter P541 independently of the actual operating
status of the FI.
High
13 Generator torque current
limit
Limit value in P112 was reached in the generator range. Hysteresis = 10 %. High
14
... 17 Reserved
--
18
FI ready
The FI is ready for operation. After being enabled it delivers an output signal.
High
19
… 29 reserved POSICON (BU 0510)
--
30
BusIO In Bit 0
Control by Bus In Bit 0 (P546 …)
High
31
BusIO In Bit 1
Control by Bus In Bit 1 (P546 …)
High
32
BusIO In Bit 2
Control by Bus In Bit 2 (P546 …)
High
33
BusIO In Bit 3
Control by Bus In Bit 3 (P546 …)
High
34
BusIO In Bit 4
Control by Bus In Bit 4 (P546 …)
High
35
BusIO In Bit 5
Control by Bus In Bit 5 (P546 …)
High
36
BusIO In Bit 6
Control by Bus In Bit 6 (P546 …)
High
37
BusIO In Bit 7
Control by Bus In Bit 7 (P546 …)
High
38
Value from Bus setpoint
Value from bus setpoint (P546 …)
High
Details can be found in the bus manuals
39
STO inactive
The relay / bit deactivates if STO or the Safe Stop are active.
High
40
reserved PLC (BU 0550)
* For relay contacts (High = "Contact closed", Low = "Contact open")
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