User manual

2-2 P1200A User Manual
REMOTE
CONTROL
FUSE T2A
220V-240V~
50-60 Hz
2200 W max
OVER
VOLTAGE
FUSE T8A FAIL
FAIL
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
P1200A Mainframe
Weight: 22 kg / 49 lbs
Z2300000121236
Made in Germany
®
e-mail: [e-mail]
P1200A mains power input and fuses
Voltage Status
OVER
VOLTAGE
LED
0 - 98 V Undervoltage off
98 - 132 V 115 V operation off
132 - 195 V Undervoltage off
195 - 265 V 230 V operation off
265 - 400 V Overvoltage on
Voltage ranges with 115/230 V option
2.3. Mains power input and overvoltage protection
To protect against mains power overvoltage damage the P1200A
is fitted with an efficient, self-resetting overvoltage protection
circuit.
The nominal mains power voltage for the standard version is 230 V
(50 - 60 Hz). As soon as the mains supply voltage exceeds 265 V
the overvoltage protection circuit responds and isolates the
mainframe power supply from the mains power supply leaving only
a supervisory circuit active to monitor the mains supply voltage.
The green POWER LED on the mainframe front panel goes out and
the overvoltage LED on the mainframe rear panel comes on.
Only if the mains voltage drops below 255 V is the mainframe
automatically reconnected to the mains supply and normal
operation resumed. This 10 V (approx. 4 %) difference in the
protection circuit switching levels (switching hysteresis) prevents the
mainframe from cycling on and off with a fluctuating mains power
supply voltage.
The protection circuit will operate with any overvoltage up to 400
V; allowing the P1200A to survive connection across two phases of
a three phase mains power supply.
Note that repeatedly and rapidly occurring on and off switching
due to overvoltages may trigger the fuse of the mains inrush
current limiter circuit.
Option 100 V mains voltage
With the 100 V option the overvoltage threshold is at 115 V. When
the voltage drops below 111 V the mainframe switches on again.
Option 115/230 V variable mains voltage
This version includes an automatic adaptation for the 115 V and
the 230 V mains power voltage range (50 - 60 Hz each). The
voltage supervisory circuit not only monitors overvoltage but also
under voltage. In either case the mainframe power supply will be
isolated from the mains power supply (the green POWER LED goes
out) leaving only the supervisory circuit active. The different
voltage ranges are listed in the table at the right.
The supervisory circuit is equipped with a time delay and a
switching hysteresis (4 % difference between thresholds for
switching on and off). This provides stable operation even with a
fluctuating mains supply voltage.
The protection circuit will operate with any mains power
overvoltage up to 400 V.