11.1 Communication unit: FB-2000
11-11
1. Output Specifications
Table 11.1.1 POWER board output specifications
Output voltage 48 VDC 42 VDC 6 VDC 5 VDC
Output voltage range 47 to 49 V 41.2 to 42.8 V 5.7 to 6.1 V 5.0 to 5.2 V
Current capacity 0.63 A 1.43 A 1.1 A 5 A
Output overcurrent protection 0.82 A 1.7 A 1.5 A 5.5 A
2. Other Specifications
1) Power supply input low-voltage protection: +8.5 VDC(activated at +10.2 VDC)
2) Power supply input over-voltage protection: +36 VDC
3) Power supply reverse connection protection: The CR1 in the POWER board
It will blow fuse mounting on the power supply cable.
Make sure to replace the fuse by following the input power supply specifications. The
specifications are; for 12 VDC input, 15 A; for 24 VDC input, 8 A.
4) 48 VDC, 42 VDC, 5 VDC output voltage monitoring:
If any of the predefined voltage values gets to the 70% level or lower of the original
level for approx. 2 second or longer, the power supply will be shut down. When
abnormality is observed for the 48 VDC or the 5 VDC, the light for CR115 will turn
on, and when abnormality for the 42 VDC is observed, the light for CR 215 will turn
on.
5) Power efficiency: 80% or more
3. Adjusted Parts
The oscillating frequency for the switching regulator power supply is 70 kHz ± 1 kHz. The
oscillating frequency is measured by connecting a frequency counter between TP105 and
TP202 (GND).
R123: 70 kHz ADJ.
TP105
TP202(GND)
CR215 ON:
Voltage lowered to 42 V
CR115 ON:
Voltage lowered to
48 V or 5 V
Fig. 11.1.8 POWER (16P0276) board
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