Datasheet

P11, PA11
Vishay Sfernice
Modular Potentiometers with Cermet (P11) or
Conductive Plastic Elements (PA11)
www.vishay.com For technical questions, contact: [e-mail]
See also: Application notes
Document Number: 51031
98 Revision: 23-Aug-07
OPTIONS
MODULES : RS ON/OFF SWITCH
RSI CHANGEOVER SWITCH
The position of each module is free.
RS and RSI rotary switches are housed in a standard P11
module size 12.7 x 12.7 x 5.08 mm (0.5" x 0.5" x 0.2"). They
have the same terminal styles as the assembled electrical
modules.
Switch actuation is described as seen from the shaft end.
D: means actuation in maximum CCW position
F: means actuation in maximum CW position
The switch actuation travel is 25° with a total mechanical
travel of 300° ± 5°.
MODULES :
PUSH/PUSH SWITCH RSPP
MOMENTARY/PUSH SWITCH RSMP
The switches are manufactured by ITT, F.U. series (NE18
series available on request).
They have to be the last element of potentiometer and are
linked to electrical module by an interface.
RSPP and RSMP switches are available only with P11/PA11
T-Q or 7 series not with P11/PA11 V or 2 series.
Options :
2 reversing switches F2 4 reversing switches F4
6 reversing switches F6 8 reversing switches F8
Available with shafts R (T), G (Q), CR (7) others shafts on
request.
Not available with panel sealed option.
Number of modules before the switch limited to 3 modules.
VALLEY DETENTS
The valley detents mechanism is housed in a standard P11
module. Up to 21 detents position available.
Count detents as follows : 1 for CCW position, 1 for full CW
position, plus the other positions forming equal resistance
increments (linear taper) - not equal angles.
Available now : CVID - CVIF - CVIM
CV3 - CV11 - CV21
RSD SINGLE POLE SWITCH, NORMALLY
OPEN
In full CCW position, the contact between 1 and 3 is open. It
is made at the beginning of the travel in CW direction.
RSF SINGLE POLE SWITCH, NORMALLY OPEN
In full CW position, the contact between 1 and 3 is open. It is
made at the beginning of the travel in CCW direction.
RSID SINGLE POLE CHANGEOVER
In full CCW position, the contact is made between 3 and 2
and open between 3 and 1. Switch actuation (CW direction)
reverses these positions.
RSIF SINGLE POLE CHANGEOVER
In full CW position, the contact is made between 1 and 2 and
open between 1 and 3. Switch actuation (CCW direction)
reverses these positions.
PERFORMANCE
TESTS CONDITIONS
TYPICAL VALUES AND DRIFTS
P11 CERMET
PA11
CONDUCTIVE
PLASTIC
Load Life
1000 hours at + 70 °C
(90'/30')
total resistance shift ± 2 % ± 10 %
contact resistance variation ± 4 % ± 5 %
Temperature Cycle
5 cycles
- 55 °C to 125 °C
total resistance shift ± 0.2 % ± 0. 5 % typical
Moisture
+ 40 °C
93 % relative humidity
total resistance shift
insulation resistance
56 days
± 2 %
> 1000 MΩ
21 days
± 5 %
> 10 MΩ
Rotational Life P11/PA11: 50 000 cycles
total resistance shift
contact resistance variation
± 5 %
± 5 %
± 6 %
± 4 %
Climatic Sequence
Dry heat at + 125 °C/Damp heat
Cold - 55 °C/Damp Heat
5 cycles
total resistance shift ± 1 % -
Shock
50 G 11 ms
3 shocks - 3 directions
total resistance shift
resistance setting change
± 0.2 %
± 0.5 %
± 0.2 %
± 0.5 % typical
Vibration
10 - 55 Hz
0.75 mm or 10 G
6 hours
total resistance shift
voltage setting change
± 0.2 %
± 0.5 % typical
± 0.2 %
± 0.5 % typical
CVI D
CVI M
CVIF CV1 1
β
β
α =
270 °
n- 1
β = α + 15 °
α
CAUTION: Because of the switch actuation
travel, the potentiometer total electrical travel is
reduced to 240° ± 10°