ABB ACS550-02 User Manual page 130

128
Code Description
4023 PID SLEEP LEVEL
Sets the motor speed / frequency that enables the PID sleep
function – a motor speed / frequency below this level, for at least
the time period 4024
function (stopping the drive).
• Requires 4022 = 7
• See figure: A = PID output level; B = PID process feedback.
4024 PID SLEEP DELAY
Sets the time delay for the PID sleep function – a motor speed /
frequency below 4023
enables the PID sleep function (stopping the drive).
• See 4023
PID SLEEP LEVEL
4025 WAKE-UP DEVIATION
Defines the wake-up deviation – a deviation from the setpoint
greater than this value, for at least the time period 4026
, re-starts the PID controller.
DELAY
• Parameters 4006 and 4007 define the units and scale.
• Parameter 4005 = 0,
Wake-up level = Setpoint - Wake-up deviation.
• Parameter 4005 = 1,
Wake-up level = Setpoint + Wake-up deviation.
• Wake-up level can be above or below setpoint.
See figures:
• C = Wake-up level when parameter 4005 = 1
• D = Wake-up level when parameter 4005 = 0
• E = Feedback is above wake-up level and lasts longer than 4026
- – PID function wakes up.
WAKE UP DELAY
• F = Feedback is below wake-up level and lasts longer than 4026
- – PID function wakes up.
WAKE UP DELAY
4026 WAKE-UP DELAY
Defines the wake-up delay – a deviation from the setpoint greater
than 4025 -
WAKE UP DEVIATION
the PID controller.
4027 PID 1 PARAM SET
Defines how selections are made between PID Set 1 and PID Set 2.
PID parameter set selection. When set 1 is selected, parameters 4001...4026 are used.
When set 2 is selected, parameters 4101...4126 are used.
0 = 1 – PID Set 1 (parameters 4001...4026) is active.
SET
1 = 1 – Defines digital input
DI
• Activating the digital input selects PID Set 2.
• De-activating the digital input selects PID Set 1.
2...6 = 2... 6 – Defines digital input
DI DI
• See 1 above.
DI
7 = 2 – PID Set 2 (parameters 4101...4126) is active.
SET
8...11 =
TIMER FUNCTION
activated = PID Set 1; Timer function activated = PID Set 2)
• See parameter Group 36: Timer Functions.
-1 = 1( ) – Defines an inverted digital input
DI INV
• Activating the digital input selects PID Set 1.
• De-activating the digital input selects PID Set 2.
-2...-6 = 2( )... 6(
DI INV DI
• See 1( ) above.
DI INV
Start-Up
enables the PID sleep
PID SLEEP DELAY
.
INTERNAL
for at least this time period
PID SLEEP LEVEL
above.
, for at least this time period, re-starts
1 as the control for PID Set selection.
DI
2... 6 as the control for PID Set selection.
DI DI
1...4 – Defines the Timer function as the control for the PID Set selection (Timer function de-
DI
) – Defines an inverted digital input
INV
P 4023
Setpoint
-
WAKE UP
Setpoint
P 4025
Setpoint
P 4025
1 as the control for PID Set selection.
2... 6 as the control for PID Set selection.
DI DI
A
t < P 4024
t > P 4024
t
B
P 4026
P 4025
t
Stop
Start
C
}
4005 = 1
P 4025
}
4005 = 0
P 4025
D
t
E
C
P 4026
D
P 4026
F
t