HP 59501B Operating And Service Manual page 16

3-46 CV Programming Connections. Figures 3-7 through
3-13 illustrate the connections required to program the CV
output of the applicable power supplies. The dotted line
connections represent jumpers which must be removed. All
other jumpers must be installed as illustrated. Note that
only those power supply terminals pertinent to CV program¬
ming are shown. Complete terminal strip details are pro¬
vided in the appropriate power supply Operating and Service
Manual. Most of the supplies are programmed using the
connections illustrated in Figure 3-7. The specific connec¬
tions for each supply are tabulated on the diagram.
3-47 Special Protection Circuit. As indicated on Figure
3-7, some of the supplies contain a special protection circuit
which must be considered when programming with the
59501 A. The supplies affected are models 6256B through
8274B, 6282A, 6285A, 6286A, 6290A, 6291 A, and 6296A.
Down programming the output voltage of these supplies may
activate the special protection circuit. When this occurs, the
power supply's load cannot draw more than 10% (approx.)
of rated output current until the protection circuit resets.
If it is desired to program the output voltage down to a
lower value without the need to draw full output current,
the reset time is not important. The reset time can take
from 500msec to 6 seconds depending upon the particular
model, the load, and the starting and the ending voltage
values. For example, the actual output voltage of a 6264B
supply takes only 80msec for its output to go from 20 volts
down to .1% (20 millivolts), but it will be about 800 milli¬
seconds before the circuit resets allowing the full output
current to be supplied to the load. Additional information
concerning this protection circuit.is provided in HP-IB/
Power Supply Guide, HP Part No. 5952-3990.
3-48 Special Option J30. An additional circuit, desig¬
nated special Option J30, is required when CV programming
models 6427B through 6448B and 6466C through 6483C.
The Option J30 circuit is a voltage-to-current converter and
is required because the 59501B is essentially a constant
voltage source. The above supplies utilize current sources in
their programming networks. The programmable 0 - 10V
output of the 59501B is connected to the Option J30 input
terminals (+ and --) on the rear of the supply as shown in
Figure 3-10. One characteristic of the J30 converter is that
if its input is open circuited, the output of the power supply
will rise to about 25% of its rating. With the 59501B con¬
nected, the open circuit condition is prevented because a
protection circuit in the 59501B presents a low impedance
to the J30 input when ac power is removed from the 59501B
(see paragraph 4-13).
3-49 If the Option J30 power supply's front panel
VOLTAGE controls are left connected in the circuit, they
must be set to maximum resistance (fully CW). If they are
rotated COW, the output of the supply will be decreased
for all programming voltage received from the 59501B,. As
indicated on Figure 3-10, the user may disable the front
panel VOLTAGE controls and connect the 59501B's
POWER SUPPLY FULL SCALE ADJUST in their place.
Refer to the applicable power supply's Operating and
Service Manual for additional connection information.
NOTE: The dotted line connections represent jumpers
which must be removed. All other jumpers must be installed.
Hf (iE.E 595016
MODEL NO.
VOLTAGE
PROG TERMS
REMARKS
A
B C
60O2A
A3 A2 At
IE THE 6002A IS EQUIPPED WITH OPTION
001, MODE SWITCH ON 6002A MUST BE
SET TO CC OR LOCAL.
610SA, 02A, 06A
A4 A5 A6
REMOVE JUMPER BETWEEN A8 AND -S
(POWER SUPPLY TERMINAL AS IS NOT
SHOWN ON THE CONNECTION DIAGRAM ).
PRECISION POWER SUPPUES : ACCURACY
IS SIGNIFICANTLY REDUCED WHEN
PROGRAMMING WITH 5950IB.
6S04A,05A,I4A,I5A
A2 AI A3
PRECISION POWER SUPPLIES'. ACCURACY
IS SIGNIFICANTLY REDUCED WHEN
PROGRAMMING WITH 5950IB
6IIIA,I2A,I3A,I6A
A4 A5 A4
REMOVE JUMPER BETWEEN A8 AND -S
(POWER SUPPLY TERMINAL A8 IS NOT SHOWNON
THE CONNECTION DIAGRAM), PRECISION
POWER SUPPLIES i ACCURACY IS SIGNIFI¬
CANTLY SEDUCED WHEN PRGMNG WITH 33SOB.
6200C, 04B.05C, 068,208
A7 A6
A8 DUAL RANGE UNITS. FRONT PANEL RANGE
SWITCH MUST 8E SET TO CESIRED OPERATING
VOLTAGE. ALSO A CAPACITOR IS REQUIRED
BETWEEN TERMINALS A6 AND -S TO MAINTAIN
PARC PERFORMANCE. REFER TO APPLICABLE
0 a S MANUAL PARTS LIST AND USE THE
SAME VALUE FOR THE CAPACITOR AS THAT
LISTED FOR Cl.
62018,028,038,0TB, 20B,
248,26B.53A, 55A.8IA, 84A
89A.94A.99A
A7
A6 A8
A CAPACITOR IS REQUIRED BETWEEN TER¬
MINALS A6 AND
-s
TO MAINTAIN PARC PER¬
FORMANCE. REFER TO APPLICABLE 0 a S
MANUAL PARTS LIST AND USE THE SAME
VALUE FCR THE CAPACITOR AS THAT LISTED
FOR Cl.
62098
A7 A6 AS
FOR MODEL 6209B (320V OUTPUT! CONNECT
-S TO TERMINAL A6 ON THE 595016 INSTEAD
OF TERMINAL AS. ALSO A CAPACITOR IS RE¬
QUIRED BETWEEN TERMINALS A6 AND -S TO
MAINTAIN PARD PERFORMANCE. REFER TO
APPLICABLE 0 a S MANUAL PARTS LI ST AND
USE THE SAME VALUE TOR THE CAPACITOR AS
THAT LISTED FOR Cl.
62278,288
Ai A2 A3
A 5/iF CAPACITOR AND A 24il RESISTOR
(CONNECTED IN SERIES BETWEEN TERMINALS
A?. AND -S) ARE REQUIRED TO MAINTAIN
PARD PERFORMANCE. SEE 62278/62288
0 8 S MANUAL FOR WIRING INSTRUCTIONS.
62568, 59B ,608,616 ,630,
S4B ,658,668,678,688,
698, 718,74B
A3 A2 AI
THESE SUPPLIES CONTAIN SPECIAL PRO¬
TECTION CIRCUITS WHICH MUST BE CON¬
SIDERED WHEN PROGRAMMING WITH THE
6282A.85A ,86a ,90a,
9 (A ,96A
A5 A4 A3
595018 (SEE PARAGRAPH 3-47)
3-7
Figure 3-7. CV Programming Connections for HP Power
Supplies with +S Common