Preliminary Data Sheet
GE
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Linear Data Format The definition is identical to Part II of the
PMBus Specification. All standard PMBus values, with the
Hex
Code
80
Data
Field
1
exception of output voltage related functions, are represented
by the linear format described below. Output voltage functions
are represented by a 16 bit mantissa. Output voltage has a E=9
constant exponent.
Command
Status_mfr_specific
Function
R
R
Status_fan_1_2
81
88
89
8B
8C
8D
90
91
1
2
2
2
2
2
2
2
Read_Vin
Read Iin
Read_Vout
Read_Iout
Read_temperature
Read_fan_speed_1
Read_fan_speed_2
Read input voltage
Read input current
Read output voltage
Read output current
Read Temperature
In RPM
The Linear Data Format is a two byte value with an 11-bit,
two’s complement mantissa and a 5-bit, two’s complement
exponent or scaling factor, its format is shown below.
Data Byte High
Data Byte Low
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
In RPM
Exponent (E)
Mantissa (M)
Read_Pout
Read_Pin
96
97
98
99
9A
9E
2
2
The relationship between the Mantissa, Exponent, and Actual
Value (V) is given by the following equation:
PMBus revision
Mfr_ID
1
V M 2E
5
FRU_ID
R
Mfr_model
Mfr_serial
16
15
Where: V is the value, M is the 11-bit, two’s omplement
mantissa, E is the 5-bit, two’s complement exponent
Mfr_Vin_min
Mfr_Vin_max
Mfr_Iin_max
Mfr_Pin_max
Mfr_Vout_min
Mfr_Vout_max
Mfr_Iout_max
Mfr_Pout_max
Mfr_Tambient_max
Mfr_Tambient_min
User_data_00
User_data_01
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
B0
B1
2
2
2
2
2
2
2
2
2
PMBusTM Command set:
Hex Data
Code Byte
Command
Operation
ON_OFF_config
Clear_faults
Function
Output ON/OFF
Set at 1D, can’t change
Clear Status
Write control
01
02
03
10
1
1
0
1
W
R
Write_protect
W
W
R
Store_default_all
11
12
0
0
Store permanently
Reset defaults
2
48
48
W
W
User memory space
User memory space
Restore_default_all
Capability
Vout_mode
Vout_command
19
20
21
1
1
2
R
R
W
30h, 400kHz, SMBAlert
Vout constants
Set Vout
R
Read_mfr_revision
Fan_duty_cycle
Fan_speed
D5
D6
D7
D8
4
1
1
2
W
W
W
Duty_cycle in %
Control in duty cycle
Fan_command_1
3B
40
41
42
43
44
45
46
47
2
2
1
2
2
2
1
2
1
W
W
W
W
W
W
W
W
W
Set fan speed in RPM
Set OV fault limit
Vout_OV_fault_limit
Vout_OV_fault_response
Vout_OV_warn_limit
Vout_UV_warn_limit
Vout_UV_fault_limit
Vout_UV_fault_response
Iout_OC_fault_limit
Vprog_ext
Set OV warn limit
Set UV warn limit
Notes: Settings and read backs above support the 12Vdc main
output. There are no adjustments or read backs of the standby
output. Failure of the standby output is reported by the
STATUS_MFR_SPECIFIC register. The code does not check the
validity of, or whether the data being changed is within the
expected boundary. The user is responsible to make sure that
data placed in the registers is within the monitored range.
Iout_OC_fault_response
Latch or hiccup
W
W
W
W
W
W
W
Set OC warn limit
Iout_OC_warn_limit
OT_fault_limit
4A
4F
50
51
55
57
58
2
2
1
2
2
2
2
Latch or hiccup
Set OT warn limit
OT_fault_response
OT_warn_limit
Vin_OV_fault_limit
Vin_OV_warn_limit
Vin_UV_warn_limit
Set OV warn limit
Set UV warn limit
Set UV shutdown
Status Register Bit Allocation:
Register
Code Bit
Function
Vin_UV_fault_limit
Status_byte
Status_word
Status_Vout
59
78
79
7A
7B
7C
7D
7E
7F
2
1
2
1
1
1
1
1
1
W
R
R
R
R
R
R
R
R
7
6
5
4
Busy
DC_ OFF
Output OV Fault detected
Output OC Fault detected
Input UV Fault detected
Temperature Fault/warning
detected
CML (communication fault)
detected
None of Below
Status_Iout
3
Status_Byte
78
2
Status_input
Status_temperature
Status_CML
1
0
Status_other
February 7, 2014
©2013 General Electric Company. All rights reserved.
Page 10
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