Technical data
OM 1191 41
Parameters
Group 81: PFA Control
Table 22: Group 81: PFA Control
Code Description Range Resolution Default S
8120 INTERLOCKS 0…6 1 4 (DI4)
Denes operation of the Interlock function. When the Interlock function is enabled:
• An interlock is active when its command signal is absent.
• An interlock is inactive when its command signal is present.
• The MD5 will not start if a start command occurs when the speed regulated motor’s interlock is active – the control panel displays an alarm.
Wire each Interlock circuit as follows:
• Wire a contact of the motor’s On/Off switch to the Interlock circuit – the drive’s PFA logic can then recognize that the motor is switched off and start the
next available motor.
• Wire a contact of the motor thermal relay (or other protective device in the motor circuit) to the Interlock input – the drive’s PFA
logic can then recognize
that a motor fault is activated and stop the motor.
0 = NOT SEL – Disables the Interlock function. All digital inputs are available for other purposes.
• Requires 8118 AUTOCHNG INTERV = 0.0 (The Autochange function must be disabled if Interlock function is disabled.)
1 = DI1 – Enables the Interlock function and assigns a digital input (starting with DI1) to the interlock signal for each PFA relay. These assignments are
dened in the following table and depend on:
• the number of PFA relays [number of parameters 1401…1403 and 1410…1412 with value = 31 (PFA)]
• the Autochange function status (disabled if 8118 AUTOCHNG INTERV = 0.0, and otherwise enabled).
No. PFA relays Autochange disabled (P 8118) Autochange enabled (P 8118)
0 DI1: Speed Reg Motor Not allowed
DI2…DI6: Free
1 DI1: Speed Reg Motor DI1: First PFA Relay
DI2: First PFA Relay DI2…DI6: Free
DI3…DI6: Free
2 DI1: Speed Reg Motor DI1: First PFA Relay
DI2: First PFA Relay DI2: Second PFA Relay
DI3: Second PFA Relay DI3…DI6: Free
DI4…DI6: Free
3 DI1: Speed Reg Motor DI1: First PFA Relay
DI2: First PFA Relay DI2: Second PFA Relay
DI3: Second PFA Relay DI3: Third PFA Relay
DI4: Third PFA Relay DI4…DI6: Free
DI5…DI6: Free
4 DI1: Speed Reg Motor DI1: First PFA Relay
DI2: First PFA Relay DI2: Second PFA Relay
DI3: Second PFA Relay DI3: Third PFA Relay
DI4: Third PFA Relay DI4: Fourth PFA Relay
DI5: Fourth PFA Relay DI5…DI6: Free
DI6: Free
5 DI1: Speed Reg Motor DI1: First PFA Relay
DI2: First PFA Relay DI2: Second PFA Relay
DI3: Second PFA Relay DI3: Third PFA Relay
DI4: Third PFA Relay DI4: Fourth PFA Relay
DI5: Fourth PFA Relay DI5: Fifth PFA Relay
DI6: Fifth PFA Relay DI6: Free
6 Not allowed DI1: First PFA Relay
DI2: Second PFA Relay
DI3: Third PFA Relay
DI4: Fourth PFA Relay
DI5: Fifth PFA Relay
DI6: Sixth PFA Relay