AE Techron 7548 Operator's Manual page 42

Pin # Function Description
20
I SUM1– Multiple Amplifier
Summing, Ampli-
fier 1
21
I SUM2– Multiple Amplifier
Summing, Ampli-
fier 2
22
I SUM3– Multiple Amplifier
Summing, Ampli-
fier 3
23
OverLoad Out Overload output
(amplifier output is
clipping).
24 OverVoltage Overvoltage output
Out (High AC line volt-
age).
25
Reset Reset
Gray shaded areas indicate pin not used / feature not implemented.
Signal Level when Level when
Type Asserted Deasserted
DC
DC
DC
DC –24V 0V
DC –24V 0V
DC –15V 0V
Notes
Planned for use in multiple amplifier
configurations - paralleled and run-
ning Controlled Current Mode
Planned for use in multiple amplifier
configurations - paralleled and run-
ning Controlled Current Mode
Planned for use in multiple amplifier
configurations - paralleled and run-
ning Controlled Current Mode
When amp is normal, this pin
is pulled to –24V through a
47.5K-ohm resistor; when amp is in
Overload state, this pin is ground-
ed. Do not exceed 6 milliamps.
When amp is normal, this pin
is pulled to –24V through a
47.5K-ohm resistor; when amp
is in Overvoltage state, this pin
is grounded. Do not exceed 6
milliamps.
Tie to PIN 13 (–24V dc) and create
a –15V dc source; <2mA required
for reset. Connect the –15V dc
source to PIN 25 (Reset) through a
1K buffer resistor to reset.
Blue shaded areas indicate used only in multi-amplifier systems.
Applications
Currently not used.
Currently not used.
Currently not used.
Remote Signal of Overload Condition: LED, when lit,
signals Overload condition. Use a 6mA series resistor
of 4.7K-ohm for LED or OPTO, tie to –24V source (PIN
13).
Remote Signal of Overvoltage Condition: LED, when
lit, signals Overvoltage condition. Use a 6mA series re-
sistor of 4.7K-ohm for LED or OPTO, tie to –24V source
(PIN 13).
Reset from Standby: Use a dry contact switch and
voltage regulator to return amp to Ready/Run condition
after Overload conditions. Assert –15V for at least 100
ms to clear error condition.
A3