ABB ACS 400 - Page 120

ACS 400 User’s Manual 109
4013 PID SLEEP DELAY
Time delay for the sleep function, see Figure 45. If the ACS 400 output frequency is below a set level
(parameter 4014
SLEEP LEVEL) longer than PID SLEEP DELAY, ACS 400 is stopped.
Alarm 28 is displayed when PID sleep is active.
4014 PID SLEEP LEVEL
Level for activation of sleep function, see Figure 45. When the ACS 400 output frequency falls below the
sleep level, the sleep delay counter is started. When the ACS 400 output frequency rises above the sleep
level, the sleep delay counter is reset.
4015 WAKE-UP LEVEL
Level for deactivation of sleep function. This parameter sets a process actual value limit for the sleep
function (see Figure 45). The limit floats with the process reference.
Non-inverted error value (parameter 4005 = 0)
Applied wake-up level is according to the following formula:
Limit = parameter 1107 +
parameter 4015 * (set point - parameter 1107) /
(parameter 1108 - parameter 1107)
When the actual value is less than or equal to this value, the sleep function is de-activated. See Figure 46
and Figure 48.
Inverted error value (parameter 4005 = 1)
Applied wake-up level is according to the following formula:
Limit = parameter 1108 +
parameter 4015 * (parameter 1108 - setpoint) /
(parameter 1108 - parameter 1107)
When the actual value is higher than or equal to this value, the sleep function is de-activated. See Figure 47
and Figure 49.
4016 PID PARAM SET
PID parameter set selection. When set 1 is selected, parameters 4001-4012 and 4019-4020 are used.
When set 2 is selected, parameters 4101-4112 and 4119-4120 are used.
1...5 = DI1...DI5
PID parameter set is selected through a digital input (DI1...DI5). Parameter set 1 is used when the digital
input is not active. Parameter set 2 is used when the digital input is active.
6 =
SET 1
PID parameter set 1 is active.
7 =
SET 2
PID parameter set 2 is active.
4017 WAKE-UP DELAY
Delay for deactivation of PID sleep function. Refer to parameter 4015
WAKE-UP LEVEL and Figure 45.
4018 SLEEP SELECTION
PID sleep function control.
0 =
INTERNAL
When INTERNAL is selected, the sleep state is controlled by the output frequency, process reference and
process actual value. Refer to parameters 4015
WAKE-UP LEVEL and 4014 PID SLEEP LEVEL.
1...5 = DI1...DI5
Sleep state is activated and deactivated using a digital input.
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