EFKA DA82GA3312
43
The roller is lifted by enabling the solenoid valve on output A/15. After power On, output A/15 and the correspondiing
LED on D/12 are On.
The roller and its indicator are switched off (roller lowered) when pressing the key connected to socket D/4, only if
parameter 146 = 3.
The roller and its indicator are switched on when pressing the key again.
The roller is lowered after the start backtack (at the start of the seam when the start backtack is Off) after a number of
stitches that can be set (parameter 186), unless it has been lowered before by pressing the appropriate key.
The roller is lifted when thread trimming is started.
The following functions are set using parameter 261:
Parameter 261 = 0 No coupling of roller and sewing foot lift or backtack.
Parameter 261 = 1 The roller is lifted with sewing foot lift or backtack.
Parameter 261 = 2 The roller is lifted with sewing foot lift. After the sewing foot has lowered, the roller lowers after
the set number of stitches (using parameter 186 and its activation according to parameter 260), or by pressing the
appropriate key.
Parameter 261 = 3 The roller is lifted with the backtack. After the backtack has been completed, the roller lowers
immediately.
If the roller is up when activating the intermediate backtack, it remains up after the backtack has been completed.
Parameter 262 = 0 The roller remains lowered when enabling the high lift for walking foot.
Parameter 262 = 1 The roller is lifted when enabling the high lift for walking foot.
6.23 Thread Clamp
Functions Parameter
Thread clamp functions (FkL) 154
Increments up to thread clamp enable (signal 1) (k1) 155
Increments up to thread clamp disable (signal 1) (k1-) 156
Increments up to thread clamp enable (signal 2) (k2) 157
Increments up to thread clamp disable (signal 2) (k2-) 158
The thread clamp functions can be selected using parameter 154. The thread clamp signal is blocked right after power On.
The thread clamp signal is issued:
whenever the sewing foot is lifted
during reverse running
after the drive has started
The following functions are possible with parameter 154:
Parameter 154 = 0 Thread clamp Off
Parameter 154 = 1 Thread clamp function: Use of the parameter values 155...158. The thread clamp (signal 1) is
enabled after the increments preset using parameter 155 and disabled after the increments preset using parameter 156. If
increments have been selected using parameters 157 and 158, the thread clamp signal (signal 2) will be issued again. The
number of increments of parameter 156 or 158 must always be higher than that of parameter 155 or 157.
Parameter 154 = 2...7 Thread clamp function: Use of preset values according to the table below.
Parameter 154 Select 100Ω, 220Ω, 680Ω, 1000Ω
Thread Clamp On Thread Clamp Off
2 302 344
3 274 316
4 246 388
5 100 198
6 070 156
7 070 270
If parameter 154 >0, the speed is limited to 250 RPM.
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