GE Industrial Solutions CAR2912TE series - Manual (Page 12)

GE
Preliminary Data Sheet
CAR2912TE series front-end
Input: 90Vac to 264Vac; Output: 12Vdc @ 2900W; 3.3 or 5Vdc @ 4A Standby
October 21, 2013 ©2013 General Electric Company. All rights reserved. Page 12
Command
Hex
Code
Data
Field
Non-
Volatile
Memory
Storage
Read_Vout 0x8B 2
Read_Iout 0x8C 2
Read_temperature_1 0x8D 2
Read_temperature_2 0x8E 2
Read_temperature_3 0x8F 2
Read_fan_speed_1 0x90 2
Read_fan_speed_2 0x91 2
Read_Pin 0x97 2
Mfr_ID 0x99 5
Mfr_model 0x9A 16
Mfr_revision 0x9B 4
Mfr_serial 0x9E 15
Read_status 0xD0 10
Read_Status_state 0xD1 2
Read_Alarm_state 0xD2 2
Read_fan_speed 0XD3 4
Read_input_string 0xD4 2
Read_firmware_rev 0xD5 3
Read_run_timer 0xD6 3
Read Bus Status 0xD7 1
Take over bus control 0xD8
EEPROM Record 0xD9 128
Stretch_LO_25ms 0XDA 0
Test Function 0xDF 1
Compatibility code 0xE0 20
Memory capability 0xE1 5
Boot loader 0xE2 1
Data transfer 0xE3 ≤32
Command Descriptions
Operation (0x01) : By default the Power supply is turned ON
at power up as long as Power ON/OFF signal pin is active HI.
The Operation command is used to turn the Power Supply ON
or OFF via the PMBus. The data byte below follows the
OPERATION command.
FUNCTION DATA BYTE
Unit ON 80
Unit OFF 00
To RESET the power supply cycle the power supply OFF, wait
at least 2 seconds, and then turn back ON. All alarms and
shutdowns are cleared during a restart.
Clear_faults (0x03): This command clears all STATUS and
FAULT registers and resets the SMBAlert# line of both the
power supply and I 2 C bus STATUS register.
If a fault, or a STATUS needing attention, still persists after the
issuance of the clear_faults command, the specific registers
indicating the fault are reset and the specific SMBAlert# line is
activated again.
WRITE_PROTECT register (0x10): Used to control writing to
the PMBus device. The intent of this command is to provide
protection against accidental changes. All supported
command parameters may have their parameters read,
regardless of the write_protect settings. The contents of this
register can be stored to non-volatile memory using the
Store_default_code command. The default setting of this
register is disable_all_writes except write_protect 0x80h.
FUNCTION DATA BYTE
Enable all writes 00
Disable all writes except write_protect 80
Disable all writes except write_protect and
OPERATION
40
Restore_Default_All (0x12): Restores all register values and
responses to the default parameters set in the power supply.
Store_default_code (0x13):
Changes the default setting of a
single register. In this fashion some protection is offered to
ensure that only those registers that are desired to be
changed are in fact changed.
Restore_default_code (0x14): Restore only a specific register
parameter to its default parameter.
Vout_mode (0x20):
This is a ‘read only’ register. The upper
three bits specify the supported data format, in this case
Direct mode. The lower five bits are not used when direct
mode is specified since there are three variables for each
conversion.
Mode Bits [7:5] Bits [4:0] (Parameter)
Direct 010b Set to 00000b
Vout_Command (0x21) : This command is used to change the
output voltage of the power supply.
Changing the output voltage should be performed
simultaneously to all power supplies operating in parallel
using the Global Address (Broadcast) feature. If only a single
power supply is instructed to change its output, it may
attempt to source all the required power which can cause
either a power limit or shutdown condition.
Software programming of output voltage permanently
overrides the set point voltage configured by the Vprog signal
pin. The program no longer looks at the ‘Vprog pin’ and will
not respond to any hardware voltage settings. If power is
removed from the µController it will reset itself into its default