Features And Functions - ABB CPS6000 Product Manual

Current Limit: This is an indication that the rectifiers are delivering maximum current to the load. This
is a situation that can occur after a battery on discharge event when the utility service comes back. The
rectifiers will be powering the load as well as providing charging current to the batteries. Normal
operation will resume and the blinking LED will stop blinking once the batteries are charged. See graph
below for more details. While in the current limit mode, the rectifier front panel LEDs will light as
indicated in the Status LED table.
Remote Standby: These rectifiers may be placed in standby mode by the Controller. When in standby,
ac power is still provided to the rectifiers but the output is inhibited. When the controller is queried, it
will report this rectifier's status as STANDBY. While in the standby mode, the rectifier front panel LEDs
will light as indicated in the Status LED table.
Communication Loss: If the rectifier loses communication with the system controller, it will blink its
Alarm LED. Once communication is lost with the system controller, the rectifier output voltage will
remain at the last voltage set by the system controller.

Features and Functions

QS86xA Output Power Curve
The following graph shows the QS86xA rectifier output power curve. This curve is valid for both low-line
and high-line operation. Use the table following the curve for the current levels at key voltage levels. The
rectifier can deliver constant power to approximately 48Vdc.
Further loading of the rectifier will result in the rectifier operating in the constant-current mode. If the
rectifier is loaded below approximately 36V, the rectifier enters the hiccup mode.
During start-up, the rectifier can deliver an increased amount of current as specified at point
C. Point B is the nominal operating point.
Point D is the internal thermal threshold beyond which the rectifier shuts down to protect itself. Point D
is not based on constant power.
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Volts
BUHVSD
SHVSD
Shutdown if internal
temperature exceeds
threshold. Restart if
o
10 C cooler
Based on Constant Power
A - Current at 59V
B - Current at 54.5V
C - Current at 48V
Based on current Limiting Mode
If internal temperature
exceeds threshold
D - Current 40V
Hiccup Mode
Amps