NORD Drivesystems BU0530 - Manual (Page 43)

4 Parameterisation
BU 0530 GB-3712 43
List of the functions or the digital inputs P420 ... P425, P470 which are relevant to "Functional safety"
Value Function Description Signal
00 No function Input switched off. -----
10 Disable voltage
7
The FI output voltage is switched off; the motor runs down freely. Low
11 Fast stop ³ The FI reduces the frequency according to the programmed fast stop time
P426. Low
List of possible functions for the relays and digital outputs P434, P441, P450, P455
Valu
e
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 (see also P107) should be
programmed.
A mechanical brake can be directly AC switched. (Please note the tech-
nical specifications of the relay contacts)
High
07 Fault General fault message, fault is active or not yet acknowledged.

Error – contact opens (ready – contact closes)
Low
39 STO inactive The relay / bit deactivates if STO or the Safe Stop are active. High
* For relay contacts (High = "Contact closed", Low = "Contact open")
A complete list of all possible functions can be found in Manual BU 0500 GB.
7
Also effective for bus control (RS232, RS485, CANbus, CANopen, DeviceNet, Profibus, InterBus, AS-Interface)