ABB ACH550-UH User Manual page 181

ACH550-UH User's Manual
Code Description
8120 INTERLOCKS
Defines 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 ACH550 will not start if a start command occurs when the speed regulated motor's interlock is active – the
control panel displays an alarm (2015,
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 = – Disables the Interlock function. All digital inputs are available for other purposes.
NOT SEL
• Requires 8118
AUTOCHNG INTERV
disabled.)
1 = 1 – Enables the Interlock function and assigns a digital input (starting with
DI
PFA relay. These assignments are defined in the following table and depend on:
• the number of PFA relays [number of parameters 1401...1403 and 1410...1412 with value = 31 (
• the Autochange function status (disabled if 8118
No. PFA
relays
0 1: Speed Reg Motor
DI
2...
DI
1 1: Speed Reg Motor
DI
2: First PFA Relay
DI
3...
DI
2 1: Speed Reg Motor
DI
2: First PFA Relay
DI
3: Second PFA Relay
DI
4...
DI
3 1: Speed Reg Motor
DI
2: First PFA Relay
DI
3: Second PFA Relay
DI
4: Third PFA Relay
DI
5...
DI
4 1: Speed Reg Motor
DI
2: First PFA Relay
DI
3: Second PFA Relay
DI
4: Third PFA Relay
DI
5: Fourth PFA Relay
DI
6: Free
DI
5 1: Speed Reg Motor
DI
2: First PFA Relay
DI
3: Second PFA Relay
DI
4: Third PFA Relay
DI
5: Fourth PFA Relay
DI
6: Fifth PFA Relay
DI
6 Not allowed
Group 81: PFA Control
Range
0...6
PFA I LOCK
= 0.0 (The Autochange function must be disabled if Interlock function is
Autochange disabled
(P 8118)
6: Free
DI
6: Free
DI
6: Free
DI
6: Free
DI
Resolution
1
).
= 0.0, and otherwise enabled).
AUTOCHNG INTERV
Autochange enabled
(P 8118)
Not allowed
1: First PFA Relay
DI
2... 6: Free
DI DI
1: First PFA Relay
DI
2: Second PFA Relay
DI
3... 6: Free
DI DI
1: First PFA Relay
DI
2: Second PFA Relay
DI
3: Third PFA Relay
DI
4... 6: Free
DI DI
1: First PFA Relay
DI
2: Second PFA Relay
DI
3: Third PFA Relay
DI
4: Fourth PFA Relay
DI
5... 6: Free
DI DI
1: First PFA Relay
DI
2: Second PFA Relay
DI
3: Third PFA Relay
DI
4: Fourth PFA Relay
DI
5: Fifth PFA Relay
DI
6: Free
DI
1: First PFA Relay
DI
2: Second PFA Relay
DI
3: Third PFA Relay
DI
4: Fourth PFA Relay
DI
5: Fifth PFA Relay
DI
6: Sixth PFA Relay
DI
Default
4 ( 4)
DI
1) to the interlock signal for each
DI
)]
PFA
Parameters
1-177
S
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