Instron 1000KPX-J3, Руководство по концепции системы

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Frame
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Controls and electronics
Tension/compression control switch
This switch ( Figure 17 ) allows the operator to place hydraulic demand at the appropriate side of the
hydraulic cylinder for testing in the direction required (tension or compression). The switch controls a
solenoid valve that directs the return of pilot pressure from the hydraulic cylinder to the HPS. When the
switch is set to
Tension
, the HPS will receive pilot pressure from the tension side of the hydraulic
cylinder. Likewise for the
Compression
setting. This allows the hydraulic cylinder to build pressure in
the proper direction and load the specimen.
59 Series control unit
The 59 Series control unit ( Figure 18 ) is an enclosure that typically sits on the console. The unit houses
control components that: receive and process data from the various system transducers; communicates
with the system’s controlling software; and provides feedback to the system’s servo valve to operate the
frame as set up in the controlling software. The control components consist of a digital signal processor
card, transducer signal conditioning cards, a frame interface board, a 24 VDC power supply for the frame
interface board, a fused power entry module, a relay board, and an optional analog outputs card (when
purchased).
External connections to the control components are made on the front and rear of the unit. Connection
descriptions are outlined in
Table 6 .
Figure 17. Tension/compression control switch.
Table 6. 59 Series control unit function descriptions.
LOAD: A female 25-pin interface that connects the system’s load cell to the transducer conditioning
card.
STRAIN 1:
(optional) A female 25-pin interface that connects an extensometer to an optional transducer conditioning
card.
STRAIN 2:
(optional) A female 25-pin interface that connects an extensometer to an optional transducer conditioning
card. (Typically only required for transverse strain or other dual extensometer setups.)
ETHERNET: A connection for communication with the computer.
I/O:
(optional) Allows connection of analog chart recorders and plotters, etc. Features 4 zero suppressed and
scaled 10V outputs via BNC connectors. A 25 pin D connector provides recorder pulse drive, 4
logic line outputs and 4 logic line inputs to trigger internal and external events.
SERVICE: A connection for optional communications modem for remote diagnostics.