Manual Part 6

DC /DC Converter
5.1 Signal and Power Interfaces
Input Da ta
The input data is shown in t he table below.
Table 3 Input Da ta
Nominal Voltage +24 V DC
Permi tted Variations +18.0 ±0.5 to 29.0
±0.5 V DC
Default Start Leve l
+23.5 ±0.2 V DC
Default Undervolt age Stop
Level
+18.5 ±0.2 V DC
Default Ov ervoltage Stop Level
31.0 ±0.5 V DC
Restart Level After O vervoltage
29.0 ±0.5 V DC
Rated Power 200 W
Output Data
The
output data is shown in the table below.
Table 4 Outpu t Data
Rated Voltage -54 V DC
Default Output
-54 V DC
Overvoltage Protection
-58 ±1 V DC
Under voltage Alarm -44 ±1 V
Outpu t Current
4.
0 A at -54 V DC
Efficiency at 2 00 W Out put
>88% at I
out
=4.0 A
and 27 V DC input
Current or Power Limitation at U ( out):
225 W
5.2 Operator Interface
The DC/DC converter has the following interfaces, all located on the front panel:
• ON/OFF switch
• Start and Stop pin
An installed DC/DC converter is hard-code d to a larm input 16 in the external
alarm un it.
5 (6)
EN/LZT 720 0301 Uen R3A