1200W Crps Cold Redundancy; Table 25. 1200W Crps Cold Redundancy Threshold - Intel H2000 Technical Product Specification

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Intel Server Chassis H2000 Family TPS Power Sub-System
Standby state.
Each power supply has an additional signal that is dedicated to supporting Cold Redundancy;
CR_BUS. This signal is a common bus between all power supplies in the system. CR_BUS is
asserted when there is a fault in any power supply OR the power supplies output voltage falls
below the Vfault threshold. Asserting the CR_BUS signal causes all power supplies in Cold
Standby state to power ON.
Enabling power supplies to maintain best efficiency is achieved by looking at the Load Share
bus voltage and comparing it to a programmed voltage level through a PMBus command.
Whenever there is no active power supply on the Cold Redundancy bus driving a HIGH level on
the bus all power supplies are ON no matter their defined Cold Redundant roll (active or Cold
Standby). This guarantees that incorrect programming of the Cold Redundancy states of the
power supply will never cause the power subsystem to shut down or become over loaded. The
default state of the power subsystem is all power supplies ON. There needs to be at least one
power supply in Cold Redundant Active state or Standard Redundant state to allow the Cold
Standby state power supplies to go into Cold Standby state.
Caution: Installing two Power Supply Units with different wattage ratings on a system is not
supported. This will not provide Power Supply Redundancy and causes the system to log
multiple errors.
3.4.1

1200W CRPS Cold Redundancy

If the output power is less than 480W (40%). the Cold redundant function will be enable. Thus
you will see one PSU working normal. The second PSU will be CR mode. The Power Supply
LED is green blinking.

Table 25. 1200W CRPS Cold Redundancy Threshold.

Enable (V) percent power (W) Disable (V) percent power (W)
Cold 3.2 40.00% 480(±5%) 1.44 18.00% 432(±5%)
Standby 1
(02h)
Revision 1.5 27
Intel order number: G59059-006