Getting started with VSD-E & VSD-XE 160 Manual Ver. 1.10
6. Frequently Asked Questions
1. Do I need to connect regenerative resistor?
You may try drives & machine without regenerative resistors since VSD drives will protect them
selves from regenerative over voltage If you get over voltage faults during deceleration, then install
regenerative resistor to at least one drive in HV DC bus
2. How to configure axis homing / home switch?
There are generally two ways, choose one:
1. Use homing function of controlling software (Mach3 for example) Wire mechanical home
switch to VSD-E/XE encoder connector pins Home switch signal will be routed through
VSDEPI to PC (D-Sub 25 pins, see VSDEPI manual)
2. Use VSD-E/XE internal homing function, which does not need intervention of PC Use GDtool
to configure homing sequence In this method you may also use hard-stop ho ing which
doesn't require mechanical switch Also motor index pulse can be used for precise homing
3. How to use VSD-E/XE drives with third party breakout board (BOB) or controller?
Use GDtool to configure VSD-E/XE's CMD connector pins to match your needs I/O pin functions can
be configured from General Settings->User I/O page
For quick start, you may follow VSDEPI manual instructions to load VSDE-General_Interface.drc
configuration file (available from VSDEPI page) to drive By doing so, CMD connector pins can be
wired the following way to BOB or controller:
1 Not connected 5 Direction out ²9 Disable/clear faults out ²13 Not connected
2 Not connected 6 GND or 0V 10 Start homing out ¹ ² 14 Not connected
3 Step out ²7 3 3V to 5V supply 11 Drive fault input ³15 Not connected
4 GND or 0V 8 GND or 0V 12 Servo ready input ¹ ³ 16 Not connected
Note 1: functions of pins 10 and 12 are not usually needed in PC CNC application
Note 2: These need to be TTL or CMOS outputs (must be capable of driving logic level voltage, i e
not open collector outputs)
Note 3: pins 11-12 are the only input to BOB, all other signals are outputs Breakout needs to supply
voltage to pin 7 to make pins 11 and 12 operational
4. How to install optical fibers to LEDs?
Optical fibers can be used to route led signals to enclosure front panel:
1 Cut fibers fibers to suitable length (3 pcs per drive)
2 Insert fiber end to VSD-E/XE holes above LEDs Due to fiber diameter tolerances, fitting may
be loose or tight If fiber don't fit in hole, reduce fiber diameter by grinding it little bit with
sand paper
3 Drill holes to enclosure panel where you want fiber lights to appear By stripping black
insulator of fiber, only 1 mm holes are needed You may use adhesive to secure fiber in
position
5. How to use analog (velocity mode) input with potentiometer?
Wire a 1.0 to 3.3 kOhm potentiometer to CMD connector: middle pin to CMD pin 15, edge pins to
CMD pins 13 and 14 and connect CMD pin 16 to CMD pin 13
Configuring drive for 0-5V analog input (potentiometer) instead of +/-10V: set PWM/Analog offset to
25% and Total input scaling ratio ratio to 4:1 Also make sure drive is configured for Analog input and
for Velocity mode
For single direction operation, set offset to 0% and scaling ratio to 2:1 To reverse direction, switch
wires of CMD pins 15 and 16
7. More information
For useful tuning & performance related web links and support, please, please check the following link:
http://granitedevices fi/index php?q=manuals
www granitedevices fi 6/6 2009-06-24
