25/08/2004 ©
Söring
Service-Manual Arco- and RF-units
1
not valid for A-3000/ -2000
2
not valid for Arco-2000
-31-
3
not valid for MBC600
4
not valid for Arco-1000
5.3. Technical data
- Inputs
-- 2 x 18v~, 1 x 15v~ from 3 separate windings of mains transformer
-- input voltage switching regulator, range 100 - 150v, normally approx. 130v from
mains relay board. Voltage smoothed and unregulated.
-- Data from microcontroller over the equipment-bus
-- Signal Down: Down-regulation of output voltage independent from microcontroller.
Signal range -0.7 to +15v.
- Outputs
-- Output voltage variable, determined by microcontroller, 0 to 80v, max. current 7a,
short-circuit proof. Voltage selection with 6-bit resolution (step 1.25v).
-- Fixed voltages: -15v, +15v, max. load 400 ma. Accuracy ± 5%.
-- Signal Power-Fail: Emitter and collector of an optocoupler. Optocoupler switched, if
Power-Fail = 1.
--- for 0.5 seconds after switching-on
--- for the time of power failure +0.5 seconds after power failure
--- Power failure: at least 20 msec outside ±20% of nominal mains voltage
-- Signal U
out
: Signal with 1/10 of output voltage for monitoring of equipment and
output power error
-- Signal I
out
: Signal proportional to actual output current with 1a/v for monitoring of
output current
- Miscellaneous
-- Protection
--- Switching regulator electronically protected by shutdown after short-circuit.
Restart after 5 seconds.
--- Fixed voltages by solid-state fuses
-- Efficiency:
≥
90%
-- Accuracy: Output voltage switching regulator ±1v over the entire load- and
adjustment-range