Printer 600 Machine Controller.pdf - 第13页
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6.12 Technical Reference Manual Chapter Issue 4 May 03
Servo Loop
(Analog Outputs)
The servo motor demands are ±10V outputs buffered by operational amplifiers
which are not opto-isolated. The voltage outputs are arranged in four groups.
These are routed to their respective servo drive cards to drive individual motors.
An example of the servo loop connection is shown below:
Figure 6-8 Typical Servo Loop Connection
Servo Drive
Encoder
NextMove
Dig O/P
(FET)
Dig I/P
Servo 0
Input
Servo 0 Demand +VE
44V
AC2
44V
AC1
+VE
-VE
Servo 0 Enable
Servo 0 Error
Servo 0 Demand -VE
M
Demand
+10V
-10V
Servo Loop Block Diagram
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Chapter Issue 4 May 03 Technical Reference Manual 6.13
Stepper Motor
Outputs
The stepper motor demand outputs are digital output drivers which are opto-
isolated. The outputs are arranged in four groups for the three positional axis
drives and the fourth output is used in the multiplexer drive circuit.
Their functions are as follows:
• STEP Step pulses to the stepper drive cards
• DIR Direction of rotation to stepper drive cards.
• BOOST Not used
The outputs are routed to their respective stepper drive cards or via the
multiplexer card to drive the individual motors.
An example of the digital output for the stepper motor system is shown below:
Figure 6-9 Stepper Drive Signals
Single/Dual
Stepper Drive
STEP AXIS
DIR
STEP
NextMove Card
V+
12V
12V
Gnd
V+
Gnd
Stepper
Motor
STEP
DIR
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6.14 Technical Reference Manual Chapter Issue 4 May 03
NextMove
Breakout
The NextMove card passes signals through the 100 way breakout backplane
known as the NextMove Breakout. The breakout is situated on the rear
connector panel as shown below. DEK provide a breakout service tool which
plugs into either M19PL15 or M19PL17 it enables monitoring of the 100 Way
connector M19SK16 which has all the encoder, analog and digital signals
directed to it.
Figure 6-10 NextMove Breakout Backplane