Operation
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E-651 / E-614 Controller / Amplifier PZ129E Release 6.1.0 Page 12
4
Select the operating mode for each channel using the
corresponding SERVO ON/OFF switch on the
controller.
If SERVO is ON (closed-loop mode), the control input
voltage is used as the target position value for the
servo-control circuit, and determines the position of the
bending. If SERVO is OFF (open-loop mode), the
output voltage for the bending actuator is in direct
linear relation to the control input voltage.
5
Connect a control-input voltage source (-5 V to +5 V
DC) to the CONTROL INPUT socket for each controller
channel.
6
Power up the E-651 controller using the POWER
switch on the rear panel. The POWER LED on the front
panel lights up.
7
Deflect the actuator(s): apply a control input voltage in
the range from -5 V to +5 V to the channel(s).
You can monitor the actuator deflection with the
SENSOR MONITOR signal (see step 2; 0 V to 10 V),
even when the system is in open-loop mode.
If the output voltage corresponding to the control input
signal is outside the output voltage range (0 to 60 V),
the OFL (overflow) LED for the channel lights and
remains on as long as the overflow condition persists.
4.2
Operating Modes
E-651 / E-614 controller/amplifiers can be operated in closed-
loop or open-loop mode.
The position signal is available in either operating mode in the
form of a sensor monitor signal from 0 to 10 V. Note that +5 V
corresponds to mid-position of the actuator.
4.2.1
Closed-Loop Operation
In closed-loop mode, it is the
deflection
(position) of the
actuator that is controlled by the control input signal, which is
processed by the E-802 servo-control submodule (see section
4.3.2).
A channel of an E-651 benchtop device is in closed-loop mode
if the corresponding SERVO switch on the front panel is set to
ON.
For information on E-614 OEM modules, see the E614T0003
technical note.