Emotron VS10 - Process Controller Idle State and Rinse Function; Process Controller Idle State

256 01-6203-01R3, CG Drives & Automation
9.2. Process controller idle state and rinse function
9.2.1. Process controller idle state
If the PID control is activated, this function sets the drive in process controller mode to an
energy-saving idle state when no power is required.
Details
A typical application for this function is a booster pump for water in a high-rise building. If
no tenant opens the water tap or uses the shower for a longer period of time, the pump
changes to the energy-saving idle state. This usually happens at night. The idle state
automatically ends as soon as a tenant opens the tap again. The pumps operates normally
again until the condition for the idle state is pending again.
The conditions for activating and terminating the idle state can be set independently of
one another:
• 0x4023:001 (P610.01): Condition for activating the idle state
• 0x4023:006 (P610.06): Condition for terminating the idle state
Parameter
Name / value range / [default setting]
Info
0x4023:001
(P610.01)
PID sleep mode: Activation
(PID sleep mode: Activation)
Selection of the condition for activating the idle state.
0
Disabled
Idle state deactivated.
1 Setpoint < threshold Activation of idle state if process controller correcting variable <
frequency threshold 0x4023:003 (P610.03)
longer than the deceleration
time 0x4023:005 (P610.05).
2
Setpoint < threshold OR process variable >
feedback threshold
Activation of idle state if
Process controller correcting variable < frequency threshold
0x4023:003 (P610.03) longer than the deceleration time 0x4023:005
(P610.05) OR
fed back variable > feedback threshold 0x4023:004 (P610.04)
longer
than the deceleration time 0x4023:005 (P610.05).
3
Setpoint < threshold OR process variable <
feedback threshold
Activation of idle state if
Process controller correcting variable < frequency threshold
0x4023:003 (P610.03) longer than the deceleration time 0x4023:005
(P610.05) OR
fed back variable < feedback threshold 0x4023:004 (P610.04)
longer
than the deceleration time 0x4023:005 (P610.05).
0x4023:002
(P610.02)
PID sleep mode: Stop method
(PID sleep mode: Stop method)
Selection of the stop method after activation of the idle state.
0
Coasting
The motor becomes torqueless (coasts down to standstill).
1
Deceleration to standstill
The motor is brought to a standstill with deceleration time 1 (or
deceleration time 2, if activated).
Deceleration time 1 can be set in 0x2918 (P221.00).
Deceleration time 2 can be set in 0x291A (P223.00).
 Frequency limits and ramp times

100
2
Stop method set
The stop method set in 0x2838:003 (P203.03) is used.
0x4023:003
(P610.03)
PID sleep mode: Frequency threshold
(PID sleep mode: Freq. thresh.)
0.0 ... [0.0] ... 599.0 Hz
Frequency threshold for the activation of the idle state.
For comparing "process controller correcting variable < frequency
threshold 0x4023:003 (P610.03)" in case of selection 1 ... 3 in
0x4023:001 (P610.01).
0x4023:004
(P610.04)
PID sleep mode: Feedback threshold
(PID sleep mode: Feedback thresh.)
-300.00 ... [0.00] ... 300.00 PID unit
Feedback threshold for the activation of the idle state.
For comparing "fed back variable > feedback threshold 0x4023:004
(P610.04)" in case of selection 2 in 0x4023:001 (P610.01).
For comparing "fed back variable < feedback threshold 0x4023:004
(P610.04)" in case of selection 3 in 0x4023:001 (P610.01).
0x4023:005
(P610.05)
PID sleep mode: Delay time
(PID sleep mode: Delay time)
0.0 ... [0.0] ... 300.0 s
Minimum time for which the respective threshold must be underrun or
exceeded before the idle state is activated.