STEPCRAFT MM-800 - PV Design

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5.2 PV design
With the PV design Y (Fig. 2) you can control the speed via the PV interface and automatically monitor the
remaining runtime in the event of overload.
To protect the user and the connected systems, the PV interface is electrically isolated from the power
supply of the drive train (safety isolation). All signal and operating voltages refer to the reference potential
“GND”.
As soon as the supply pin “U
PV
” of the PV interface is supplied with voltage in accordance with the
specification, the power tool switches to “portal mode”.
The bottom status table 3 shows all possible control constellations.
Input
Output
HS / -
U
AC
/ V
U
PV
[V]
PS
S
U
S
[V]
U
0
/ V
Operating mode
n [rpm]
OFF
N/A
N/A
N/A
N/A
N/A
Out of operation
0
ON
0
N/A
N/A
N/A
N/A
Out of operation
0
ON
198-253
<6
1
N/A
N/A
Manual mode
4000
ON
198-253
<6
6
N/A
N/A
Manual mode
25000
ON
198-253
8-56
N/A
0
0-1
Portal mode
4000
ON
198-253
8-56
N/A
10
0-1
Portal mode
25000
OFF
198-253
8-56
N/A
0-10
1,5-5
Overload mode
4000-25000
Legend:
When the PV interface is not in use, protect it against dirt with the supplied covering cap Z (Fig. 3).
5.2.1 Assignment portal connector
All pins on the portal connector are protected against reverse polarity. At voltages above 30 V, continuous
operation with reversed polarity must be avoided as this can lead to failure of the PV interface.
Unit
Meaning
HS
power switch
U
AC
mains voltage
U
PV
control voltage speed specification
PS
S
position setting wheel
U
S
control voltage PV interface
U
0
display remaining runtime (in overload mode)
GND
reference potential for voltages of the PV interface
n
speed of the working spindle
N/A
not applicable or not relevant