Changed Systemstop Functions; Serial Communications(Parameter 500) - Danfoss Cascade Operating Instructions Manual

Changed systemstop functions

Two stop functions are provided by the cascade
controller option. One function quickly stops a
system. The other stages off pumps in a sequence,
allowing for a controlled pressure stop.
Do not use these functions as emergency
stops. Some functions do not turn
off all pumps.
Standard cascade control mode
Stop functions in Standard cascade control are
described in the table below. In a sequenced
stop, there is a one ramp-down time delay
between each staging off of motors.
Standard Cascade Control
Function
OFF/STOP key Provides a sequenced stop
for all constant speed motors
in opposite order as staged
on. Controller decelerates its
motor to a stop.
STOP via Controller decelerates its
Terminals 16 and motor to a stop. With motor
17 (parameters stopped, controller provides
300 and 301) sequenced stop for constant
speed motors.
STOP via Constant speed motors
Terminal 18 continue to operate normally
(parameter 302) with feedback signal from
drive. Controller decelerates
its motor to a stop.
STOP via Constant speed motors stop
Terminal 27 immediately. Controller coasts
Coast Inverse its motor to a stop.
(parameter 304)
STOP via Constant speed motors stop
Terminal 27 immediately. Controller coasts
Safety Interlock its motor to a stop.
(parameter 304)
22
Description
Cascade Controller Option
Master/Slave cascade control mode
Stop functions in Master/Slave cascade control
are described in the table below.
Master/Slave Cascade Control
Function
OFF/STOP key
STOP via Terminal 16
and 17 (parameters 300
and 301)
STOP via Terminal 18
(parameter 302)
STOP via Terminal
27 Coast Inverse
(parameter 304)
STOP via Terminal
27 Safety Interlock
(parameter 304)

Serial communications(parameter 500)

The Danfoss FC protocol may be used only with
VLT Dialog software for programming and setting
up drive and cascade controller parameters.
MG.60.I3.02 - VLT is a registered Danfoss trademark
Description
Provides a sequenced
stop for all slave motors
in opposite order as
staged on.
Master decelerates its
motor to a stop.
Slave motors all stop
together. Master
decelerates its motor to
a stop.
Slave motors all stop
together. Master
decelerates its motor to
a stop.
Slave motors all stop
together. Master coasts
its motor to a stop.
Slave motors all stop
together. Master coasts
its motor to a stop.