TDK-Lambda GENESYS 10KW - Resistive Programming of Output

83
-
530
-
000 Rev.
G
47
6.5 RESISTIVE PROGRAMMING OF OUTPUT VOLTAGE AND CURRENT LIMIT
For resistive programming, internal current sources, for output voltage and/or output current control,
supply 1mA current through external programming resistors co
n
nect
ed between J1
-
9 & 22 and J1
-
10 &
23. The voltage across the programming resistors is used as a pr
o
gramming voltage for the power
supply. Resistance of 0

5Kohm or 0

10Kohm can be selected to program the output voltage and cu
r-
rent limit from zero to full sca
le.
A variable resistor can control the output over its entire range, or a combination of variable resistor and
series/parallel resistors can control the output over r
e
stricted portion of its range.
Perform the following procedure to set the power supply
to Resistive programming:
1.
Turn the switch to off.
1.
Set setup switch SW1 positions 1 and 2 to their UP position.
2.
Set SW1 position 3 to select programming resistor range according to Table 6
-
4.
3.
Set SW1 positions 7 and 8 to their UP position to enable resistiv
e programming mode.
4.
Connect a short between J1
-
8 and J1
-
12 (refer to Table 4
-
4).
5.
Connect the programming resistors to the mating plug of J1 as shown in Fig.6
-
2.
6.
Set the programming resistors to the desired resistance and turn the power supply ON. Adjust th
e
resistors to change the power supply output.
NOTES:
1.
SW1 positions 4, 5, 6 and 9 are not required for remote programming. Their setting can be dete
r-
mined according to the application requirements.
2.
The control circuits allow the user to set the output vol
tage and current limit up to 5% over the
model
-
rated maximum value. The power supply will operate within the extended range, however it
is not recommended to operate the power supply over its voltage and current rating and perfor
m-
ance is not guaranteed.
3.
To
maintain the temperature stability specification of the power supply, the resistors used for pr
o-
gramming should be stable and low noise resistors, with temperature coeff
i
cient of less than
50ppm.
4.
When resistive programming is used, front panel and compute
r control (via serial communication
port) of output voltage and current are disabled.
SW1
-
3 setting
Output Voltage pr
o
gramming
VPGM (J1
-
9)
Current limit programming
IPGM (J1
-
10)
UP
0
-
10Kohm
0
-
10Kohm
DOWN
0
-
5Kohm
0
-
5Kohm
Table 6
-
4: SW1
-
3 setting and
programming range