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7800 SERIES OPERATION – SECTION 4
is in the Down position on the Master amplifier
module, a 2-Hz high-pass filter on the inputs pre-
vents the transmission of DC signal.
4.4 Configuration Settings Controlled
by Jumpers
The following settings can be made via jumper
settings on the Main Board. Please refer to Figure
4.1 for main board jumper locations.
Custom Compensation Network
When the 7800 series amplifier is used in Con-
trolled-Current mode, the current control loop is
tuned with an RC network. The factory default
network (CC1) provides 68.1k ohm resistance and
47 nF capacitance. If this default network is not ad-
equate for your application and load, CC2 can be
used to install a custom RC network on the Master
amplifier module's main board.
For information on installing a custom RC network,
please see the topic "Controlled Current Opera-
tion" in the Applications section of this manual.
Enable/Stop on Power-up
The 7800 series amplifier will power-up to Run
Mode when a shunt is placed across pins 1 and 2
on the Enable/Stop jumper (default setting). See
Figure 4.3. To cause the 7800 series amplifier to
enter Standby (Stop Mode) on power-up, place the
Figure 4.3 – Enable/Stop on Power-up Configuration
96-8007105_07-14-23
shunt across pins 2 and 3 on the main board of the
Master amplifier modulev.
Standby on Overload
The 7800 series amplifier's IOC (Input/Output
Comparator) Distortion Alert circuit continuously
compares the waveforms observed at the ampli-
fier input and output. When a distortion between
the two waveforms of more than 0.5% occurs, the
IOC circuit will activate, and the Overload LED will
light, but the amplifier will continue to operate. To
configure the amplifier to move to Standby (Fault
mode) when the IOC circuit is activated, locate
the Overload Latch (see Figure 4.4) on the main
board of the Master amplifier module and place a
shunt across the two pins of the jumper.
Figure 4.4 – Configure for Standby (Fault Mode) on
4.5 Adjusting the Bi-Level Power
NOTE: Before changing the Bi-Level Power
Supply setting, please contact AE Techron
Technical Support for instructions on the
proper settings to use for your application.
The amplifier system offers three Bi-Level switch
settings: Automatic, High, or Low. The user can
select between settings via a switch on the Power
Supply Board for each amplifier module. The
Power Supply Board is a horizontal board located
Information subject to change
Overload
Supply Switch
23
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