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GENERAL DESCRIPTION
The AD-7830 servo amplifier is a full-featured device
that provides high performance actuator operation
when matched with a Jordan Controls dc actuator.
Standard features include: selectable command signal
inputs, speed control, over current protection,
undervoltage protection, short circuit protection,
overtemperature protection, a 2 wire, loop powered,
4 - 20mA actuator position output signal, and loss of
current command signal features. The amplifier is
powered from 120/240 Vac, 50/60 Hz, single phase
power supply.
ACTUATOR COMPATABILITY
The AD-7830 servo amplifier can be mounted integral
to all jordan Controls SM/LA-5000 Series 90 and 180
Vdc motor power actuators, or installed remotely for all
other 90 and 180 Vdc motor power actuators.
BASIC MODELS
AD-7830
: 120/240 Vac, single phase, 50/60 Hz input
power for integral actuator mounting.
AD-7830-P
: Same as above, designed for remote
mounting.
AD-7830-R73
: Same as AD-7830, but designed for
remote mounting as a retrofit to the obsolete AD-7300
servo amplifier.
SPECIFICATIONS
Voltage Input
: 120 or 240 Vac +/- 10% (switch
selectable), 50/60 Hz, 1-phase. Note: Voltage must be
240 Vac when controlling actuators with 180 Vdc
nameplates.
Current Input
: 15 amps maximum continuous; up to
20 amps for brief periods during actuator movement.
Voltage output
: Up to 180 Vdc. Factory set (jumper)
for the specific actuator to be controlled. This setting is
either for 90 or 180 Vdc model actuators.
Current ouput
: Up to 20 amps for brief periods
during actuator movement.
Command signal input
: Field selectable 4 - 20mA
current command into a 200 ohm impedance. 0 to 5,
0 to 10 Vdc or optionally using EC-10844 for -10 to
+10 Vdc command into a 100k ohm impedance.
Position feedback signal
: 1000 ohm potentiometer
or 4 - 20 mA, switch selectable. 4 to 20 mA feedback
is normally used for remote amplifier installations.
Other inputs
: Position limit switches (2) and torque or
thrust limit switches (2) from actuator. Auto/Manual
switch with increase and decrease capabiity.
Note
: When using external Auto/Manual switch, DIP
SWITCH SW1-4 must be set for manual operation on
amplifier.
Position output signal
: Loop powered, 2 wire, 4 - 20
mA signal.
Other visual outputs
: LEDs for loss of current com-
mand signal (1), actuator driving direction (2) and
null (1).
Approximate Weights
: AD-7830-P or R73P: 10 lbs.
AD-7830-E or R73E: 35 lbs.
INSTALLATION WIRING
Most installations locate the servo amplifier inside a
Jordan Controls actuator, for ease of mounting and to
protect the amplifier. This is the preferred mounting
arrangement. For remote mounting, the servo ampli-
fier and actuator should be as close to each other as
possible. For distances exceeding 50 feet, consult
Jordan Controls.
Ensure all connections are correct and tight before
applying power. Power, command signal, feedback
signal and motor output are the minimum required
connections.
All wiring should be done in accordance with prevail-
ing codes by qualified personnel.
A typical wiring diagram is shown on page 8 .
Due to wide variations in terminal numbering of
various actuator products, actual wiring should
follow the print supplied with the actuator
.
Fusing must be installed in line power, and should be
of the slow blow type.
After installation, all conduits
must
be sealed to
prevent water damage and to maintain enclosure
integrity.
All low level signal wiring must be shielded type with
the shield grounded at source common.
