
40
6.2.2 Operation Command Delay Timer (Reverse? Forward)
If hoisting operations start just after lowering the load in Open Loop Vector or V/f Control Modes, then a large
amount of current may flow through the drive. The peak of the output current can be reduced by delaying the hoist
operation command.
Hoist operations can be delayed after lowering operations have just been executed by using the Operation Command
Delay Timer (Reverse ? Forward) in parameter S2-03. If the FWD command switches from
open ? closed ?
open
when this timer is functioning during run, then a forward command will not be accepted. After the crane has
stopped lowering its load, hoist operations will be delayed if the time for the input of the next Run Command is
shorter than the time set to parameter S2-03.
The Run Command Delay Timer (S2-03) uses settings in the motor parameters (E2-
xx
) with the following formulas
to calculate an appropriate delay time:
This parameter need not be set if excessive current does not flow through the drive when starting hoist operations
just after the crane has finished lowering its load.
6.3 Impact Stop Function
On conveyer belt applications, once a stop command is given while the Impact Stop Command is closed, then the
drive will stop as it assumes that impact has occurred with the cart (i.e., the load) if the torque reference or the output
current exceed the standard value. This function makes the simple positioning.
Refer to “Appendix-1: Parameter Calculations” when setting this parameter.
This function is enabled only when parameter b1-03 is set to zero (Deceleration Stop Mode).
Note:This function should not be used in cases where the wheels on the cart/container fail to catch upon impact. This
is because no constriction is then applied to the motor, and the torque reference and output current do not
increase.
Description of Operation
Impact Stop Selection
(Multi-Function Trmnl)
Setting value = 35
Speed Cmd Input (Trmnl A1)
FWD (REV) Cmd Input
(Trmnl S1 -S2)
Output Frequency
Brake Release Cmd BR
(Trmnl M1-M2)
Brake Release Answer Back
BX (Trmnl S5)
Brake Operations
closed
open
open
closed
HT
(TCR)
*
HF
FCR
FHF(FHR)
off
on
closed
open
closed
open
BDT
open
closed
↑
↓
ITR = IFOT (IROT)
in Vector Control Mode
IOUT = IFOT (IROT)
in V/f Control Mode
TIOT
Torque/Current Detection
(E2-01)
2
– (E2-03)
2
2p × (E2-02) × (E2-03)
× 1.5sec
Содержание CIMR-F7Z
Страница 3: ......