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ENGLISH
Configurable I/O Application Functions
Motor switching
This function is used to switch between two motors with different power ratings using the same speed
controller. An appropriate sequence must be installed on the speed controller output. Switching is carried out
with the motor stopped and the speed controller locked. The following internal parameters are automatically
switched by the logic command :
This function automatically inhibits thermal protection of the second motor.
Accessible parameter : Motor power ratio (PCC) in the drive menu.
Second torque limit
Reduction of the maximum motor torque when the logic input is active.
Parameter tL2 in the adjust menu.
Fault reset
Two types of reset are available : partial or general (rSt parameter in the "fault" menu).
Partial reset (rSt = RSP) :
Used to clear the stored fault and reset the speed controller if the cause of the fault has disappeared.
Faults affected by partial clearing :
General reset (rSt = RSG) :
This inhibits all faults (forced operation) except SCF (motor short-circuit) while the assigned logic input
is closed.
Forced local mode
Used to switch between line control mode (serial link) and local mode (controlled via the terminals or via the
display module).
Auto-tuning
When the assigned logic input changes to 1 an auto-tuning operation is triggered, in the same way as
parameter tUn in the "drive" menu.
Caution : Auto-tuning is only performed if no command has been activated. If a "freewheel stop" or "fast stop"
function is assigned to a logic input, this input must be set to 1 (active at 0).
Application : When switching motors, for example.
Auto-man PI, preset PI setpoints :
PI operation (see page 97)
Torque limitation by AI
This function is only accessible if the analogue input AI3 is assigned to torque limit. If there is not a logic input
configured on TL2 : second torque limit, the limit is directly given by AI3.
If a logic input is configured on TL2 second torque limit.
- When the input is 0 the limit is given by tLi
- When the input is 1 the limit is given by AI3
External fault
When the assigned logic input changes to 1, the motor stops (according to the configuration of the
LL
LL
SS
SS
FF
FF
Stop+flt
parameter in the Drive menu), and the drive locks in
EPF external fault
fault mode.
- nominal motor current - brake release current
-injection current
- line overvoltage - communication fault - motor overheating
- DC bus overvoltage - motor overload - serial link fault
- motor phase loss - loss of 4-20mA - speed controller overheating
- overhauling - external fault - overspeed
GP_ATV58_EN.fm Page 96 Mardi, 2. avril 2002 6:09 18