SIXpack 2 – Manual (V1.10 / January 29
th
, 2010)
13
5.2.8
Setting the chopper mode
The SIXpack 2 supports “Mixed Decay” which provides reduced motor resonance at medium velocities and
improved microstep exactness. This mode can be switched off by the DIP-switches if desired.
Chopper Scheme
DIP-switch position
description
Mixed decay
(all motors)
ON
OFF
MD_135
MD_246
Mixed decay for all motors
Mixed decay
(motor 1, 3 and 5)
ON
OFF
MD_135
MD_246
Mixed decay for motor 1, 3 and 5
Mixed decay
(motor 2, 4 and 6)
ON
OFF
MD_135
MD_246
Mixed decay for motor 2, 4 and 6
Table 5.3: Adjusting chopper mode
5.3
Connections
Initial operation of the SIXpack 2 is possible after installing current supply and serial interface.
5.3.1
Current supply
Any power supply unit with an output voltage of 15-48V may be used. The required current is conform to the
usage and quantity of motors. The connector is labeled POWER. Be aware that the polarity is correct and make
sure that your supply voltage never exceeds the absolute maximum rating.
With an appropriate current supply the LEDs “+5V” and “+24V” light up and the 7-segment-display shows zero. If
the display shows “8”, “C” or “F”, or the unit resets continuously, an internal defect has been detected. When
continuous resets occur, the Flash memory could be erased. You can try to swap flash with an other device.
5.3.2
Serial interface
The RS232 interface is connected via a null modem cable with one serial interface of the PC.
5.3.3
Motor connectors
CAUTION: Connecting or disconnecting while power on may damage the motor drivers of
the SIXpack 2.
The function “Driver enable” (refer to 5.2.6) provides the possibility to disconnect motors while the modules power
is on. Thereby all actual settings are retained.
The motors are connected with the 8 pin connectors. The pinning of the connectors are as follows:
