ElmoMC SimplIQ Analog Servo Amplifiers-Piccolo User Guide - Manual (Page 2)

PIC Starter Addendum
Elmo Motion Control
Rev. 8/99
Description
Refer to section 2 in the “PIC Operating Manual”
The PIC-STARTER is an add on interconnection board for the PIC servo amplifier that
plugs on top of the amplifier. The purpose of this board is the translation of the PIC
solder type pins into screw type terminals thus enabling easy connectivity for evaluation
and low quantity applications.
One to one relationship between board terminals and the pins of the PIC is kept.
Standard Features
Refer to section 2.1 in the “PIC Operating Manual”
q Four LEDs allow convenient diagnostics of the PIC status outputs
q The dedicated digital inputs can be activated by DIP switches
q Scaling resistors are provided for adjusting the current limits and the command
reference
Type designation
PIC-Starter
Pins functions
There is a new terminal strip – J4 with the following functions:
Terminal Function
+VCC Positive supply voltage for the LED’s
VCCRET Return for the LED supply voltage
Current Command Scaling Resistors (R1 & R2)
Refer to section 3.1 in the “PIC Operating Manual”
The user can change the default scale of the differential input (
±
3.75V) by calculating
and inserting R1 & R2 into the designated solderless terminals. The value of theses
resistors is given by:
R1=R2=5.33*Vcref-20 [K
Ω
]
Vcref is the desired maximum reference voltage.
If for example, the new desired scale is ±10V, all that is required is to change the
default resistors (0 ohms) to 33Kohm.
External Current Limit – Continuous (ECLC)
Refer to section 3.4 in the “PIC Operating Manual”
A solderless terminal is available for Reclc. It is designated as R3.
External Current Limit – Peak (ECLP)
Refer to section 3.5 in the “PIC Operating Manual”
A solderless terminal is available for Reclp. It is designated as R4.