Power Supply and Airflow
The Cloud Services Gateway (CSG) 5000 series appliances support either AC or DC power supply units (PSUs). This article describes the AC power supply, DC power supply, and airflow requirements for CSG5000 series appliances.
AC Power Supply
By default, CSG5000 series appliances ship with redundant, hot-swappable AC PSUs. These are modularized power supply units that can be removed from the appliance.
Table 1 describes the AC power supply specifications for each PSU.
Table 1: CSG5000 AC Power Supply Specifications
| Item | Specification |
|---|---|
| AC input voltage | 100–240 V |
| AC input line frequency | 50–60 Hz |
| PSU | Internal 850 W, field-replaceable, 1+1 redundant AC input, hot-swappable |
DC Power Supply
The CSG5000 series appliances ship with redundant, hot-swappable, and input-fused DC PSUs. The DC PSUs come with:
- 1 cable (3 meters)
- 1 wire harness (12 AWG)
- A connector at one end that plugs in to the PSU
- Terminal lugs at the other end to connect to the DC power source
Figure 1: DC Power Supply Unit Installed into CSG5000
If required, you can terminate the 12 AWG red and black power wires and green ground wire with a 2-hole compression lug.
Figure 2: Compression Terminal Lug
Table 2 describes the DC power supply specifications for each PSU.
Table 2: CSG5000 DC Power Supply Specifications
| Item | Specification |
|---|---|
| DC input voltage | -36 to -75 V. PSUs automatically shut-off if DC input voltage drops to below -36 V. |
| Maximum output power rating | 800 W |
| Standby input voltage to keep BMC operational | -19 V to 30 V. BMC monitors system power status and can perform a power cycle once normal operating DC voltage is present. When the DC input is below normal, -19 V to 30 V, the PSU continues to provide standby power which powers the BMC. In this case, the BMC senses that power has failed but does not trigger a power cycle since voltage is still out of range. |
Airflow Requirements
The CSG5000 series appliances have 2+1 redundant fans, which are hot swappable in the field. The fans provide front-to-back cooling.