36 PCP/ESP program features
The pump goes to backspin mode, if backspin function
is
enabled. See
). After this, the drive goes to sleep mode. If
condition to wake up is triggered (see timing diagrams) then wake up function
generates a start command for the drive. Sleep time is limited by parameter
. Wake up function generates start command if parameter
exceeds maximum sleep time. To skip this function, set value of
to 0.
Note
: The sleep command is deactivated by the wake up command. The wake up
level has higher priority than the sleep level.
The user can enable this function in the parameter
. The
user can also define the sleep level and delay time parameters according to process
requirements. The user also defines the sleep limit type (parameter
): whether
goes below the sleep limit (Low limit) or
exceeds it (High limit).
The timing diagrams below illustrate the operation of the function:
• with the limit type selection as Low and High
• when the sleep limit is lower than the wake-up limit and vice versa.
Timing diagram 1
This diagram depicts the sleep region for sleep limit type as Low. In this limit type,
sleep starts only after the sleep feedback value is below sleep level and wake up
level.The sleep function is activated when the sleep feedback value reaches sleep
level (see diagram,
Sleep level < Wakeup level
). The drive shifts to sleep mode after
sleep delay time is passed. The sleep function is active until the sleep feedback value
reaches the wakeup level (see diagram,
Sleep level > Wakeup level
). The wakeup
function is activated when the sleep feedback value reaches wakeup level. The drive
shifts to wakeup mode after wakeup delay time is passed.
Summary of Contents for ACS880 ESP
Page 1: ...ABB industrial drives Firmware manual ACS880 PCP ESP control program ...
Page 4: ......
Page 28: ...28 PCP ESP control start up ...
Page 30: ...30 Using the control panel ...
Page 94: ...94 Standard programposi features ...
Page 100: ...100 Default control connections ...
Page 360: ...360 Parameters ...
Page 436: ...436 Fault tracing ...
Page 486: ...486 Control chain diagrams ...
Page 492: ...492 Appendix ESP with step up transformer and sine filter ...
Page 494: ...Contact us www abb com drives www abb com drivespartners 3AXD50000016186 Rev B EN 2015 10 27 ...
