SycoTec easyDrive 4624 - Page 20

EN
20
Subindex 4c
Subindex 4c refers to the tau of the I²t time (P76). The parameter I²t time (P76), which can be set via the
software, is not transmitted directly to the inverter, but is previously converted to Tau. Via subindex 4c Tau is
specified directly. The following formula can be used:
Tau = P76 / (-ln( 1 - (P93 * P75)² / (P44)² ) )
P44: Motor peak current
P75: I²t threshold (Accepts values between 0.0 and 1.0.)
P76: I²t time
P93: Rated current
Tau has a minimum of 1 second and a maximum of 3.600 seconds.
This results in the following minimum and maximum values for the I²t time (P76):
P76min = 1s * (-ln( 1 - (P93 * P75)² / (P44)² ) )
P76max = 3600s * (-ln( 1 - (P93 * P75)² / (P44)² ) )
Index
(hex)
Name
Object type
Data type
Access
PDO
mapping
Default
3000:4c
I2tPer
Variable
Unsigned16
rw
no
Subindex 4d
Subindex 4d refers to the Function of the I²t monitoring (P77).
Value
Selection inverter
806a
hex
Deactivated
806b
hex
Warning
806c
hex
Motor stop
NOTE: See also Operating Manual Operating Software SycoDrive for HF Inverters e@syDrive 4624, 4625, 4626.
Index
(hex)
Name
Object type
Data type
Access
PDO
mapping
Default
3000:4d
I2tFct
Variable
Unsigned16
rw
no
Subindex 4f
Subindex 4f refers to the V control KP (P79). The value is given in %.
Index
(hex)
Name
Object type
Data type
Access
PDO
mapping
Default
3000:4f
U-Reg-KP
Variable
Unsigned16
rw
no
Subindex 50
Subindex 50 refers to the V control TN (P80). The value is given in ms.
Index
(hex)
Name
Object type
Data type
Access
PDO
mapping
Default
3000:50
U-Reg-t_n
Variable
Unsigned16
rw
no
Subindex 51
Subindex 51 refers to the Speed control KP (P81). The value is given in %.
Index
(hex)
Name
Object type
Data type
Access
PDO
mapping
Default
3000:51
N-Reg-KP
Variable
Unsigned16
rw
no
Subindex 52
Subindex 52 refers to the Speed control TN (P82). The value is given in ms.
Index
(hex)
Name
Object type
Data type
Access
PDO
mapping
Default
3000:52
N-Reg-t_n
Variable
Unsigned16
rw
no