Instruction manual

- DA321G5321
- 49 -
6.23 Thread wiper/Short trimmer
The thread wiper signal is turned on after position 2 is reached for a time set in parameter 205. After the thread
wiper is turned off, a delay time set in parameter 206 still applies until the sewing foot can lift.
If the thread wiper is turned off, the delay time for sewing foot lifting (parameter 206) does not apply.
6.24 Thread clamp
6.24.1 Thread clamp and sewing foot pressure reduction
Functions
Parameter
Thread clamp functions
Thread clamp activation angle (signal 1)
Thread clamp deactivation angle (signal 1)
Thread clamp activation angle (signal 2)
Thread clamp deactivation angle (signal 2)
(FkL)
(k1)
(k1-)
(k2)
(k2-)
154
155
156
157
158
Time of full power for the thread clamp
Holding power for thread clamp 1...100%
(t12)
(t13)
162
163
Sewing foot lifting - activation angle
Sewing foot lifting - deactivation angle
Sewing foot clocking 1 - 100%
(NF)
(NF_)
(t5_)
159
160
334
The thread clamp function can be selected by means of parameter 154. Immediately after power is turned on,
the "Thread clamp" signal is blocked.
The "Thread clamp" signal is output:
 if the sewing foot is lifted
 during reverse turning
 after the drive starts
If the thread clamp function is activated, parameter 154 = <>0, it can be turned off directly with key 5 on the
V820/V850 control panel (right arrow over key 5 is off). By programming parameter 014 = 0, it can also be
turned of.
The following settings are possible using parameter154:
154 = 0
Thread clamp Off
154 = 1
Thread clamp function: Use of values in parameters 155 to 158. The thread clamp (signal 1)
turns on after the angle specified in parameter 155 is subtended and turns back off after the
angle specified in parameter 156. If parameters 157 and 158 > 0, the thread clamp (signal 2) is
again turned on and back off.
Sewing foot pressure function: The sewing foot lifting turns on with clocking after the angle
specified in parameter 159 (parameter 334) and turns back off after the angle set in parameter
160.
154 = 2...8
The thread clamp function is executed with a fixed angle specified
If the setting of parameter 154 > 0, the speed is limited to 250 RPM.
The setting of the angle is always relative to the reference point set with parameter 170.
6.24.2 Coupling of thread clamping with sewing foot lifting
Function with or without control panel
Parameter
Coupling of thread clamping with sewing foot lifting
(kFk)
199
Parameter 199 can be used to couple the thread clamp on the seam end with sewing foot lifting.
The thread clamp stays on as long as the sewing foot lifting is turned on, but is automatically turned back off
after about 1 minute.
199= 0
Coupling Off
199= 1
Coupling on