Manual Part 6

FCU-01
4 Interf aces
The FCU-01 has the following interf aces:
• Power in
• EPC b us in
• EPC b us out
• Fan power and alarms (1 – 4)
4.1 Signal and Power Interface
Input Data
The i nput data is shown in the table b elow.
Table 2 Input Data
Nominal Input Voltage +24.0 V DC
Input Voltage Ra
nge
+19.0 to +29.0 V D
C
Non-destructive Voltage 0.9 to +32.0 V DC
Input Power 4 x 45 W
Outpu t Data
The ou tput dat a is shown in the ta ble below.
Table 3 Output Data
Outpu t Vol ta ge
9 to 28.3 V DC
Outpu t Current
Min. 1.8 A at 9 to 28.3 V DC
4.2 Operator Interface
One alarm signal e xists for each fan. The alarm circuit is normally closed.
An open circuit indicates that the fan speed is too low. The fan has an open
collector interface.
4 (6)
E
N/LZT 720 0246 Uen R2A