Manual Slider SFX
Page 13
2.9
JP11 – Start up time
Jumper JP11 influences the start up time of the board.
When the jumper is left open, it takes aprox. 3 seconds after
power on until the board is ready and the motors are under
current. With JP11 set, this time is extended to aprox. 10
seconds. This may help to ensure, that the primary control or
the PC with control software is ready and all signals are in a
defined condition.
On each boot up, the board signals the version number of
the firmware on LED1, before ready is indicated.
•
JP11: Start up time 3 seconds (jumper open) or
10 seconds (jumper closed)
2.10 JP12 – Invert relay signals
Depending on the signal level to control the relays, it may
be, that the behaviour of the relays is inverted compared to
the driving logic. Additionally, during power on or boot up
of the PC the relays may be switched unintended. With JP12
closed, the control signals for all three relays are inverted.
•
JP 12: Relay control signals inverted (jumper closed) or
normal (jumper open).
2.11 X3(1/2) – Emergency stop
The ready or emergency signal on clamp
X3, contacts 1/2, activates the three power
drivers for the motors and also acts as ena-
ble signal for the relays. The signal is routed
to the enable input of the power drivers
and can therefore be used as an emergency
signal or as a contact of a protection hood.
The switch has to be an N.C. contact. With the contact opened, all three motors are cur-
rent less and can not be driven by the board. Same applies for the relays.
Caution:
Current less motors do have a very small holding toque. If they are in motion, they
continue running due to the inertia of the axis. A current less Z-axis may fall down
on the table or to the mechanical limit due to its mass.
Summary of Contents for Slider SFX
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