Copley Controls 7228AC, Руководство пользователя

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2-24 Amplifier Connections
Preset and Reset Input Circuit
This group consists of the Preset signals /Preset 1,
/Preset 2, /Preset 3, /Preset 4 and /Reset. For ‘fail-safe’
operation, such as a disconnected or wire broken, a
software command controls the Preset and Reset
inputs, pull-up or pull-down level, as a group. This circuit
(Figure 2-25) works with single-ended TTL signals, and
single-ended open-collector signals.
Figure 2-25 Preset and Reset Input Circuit
Connections to a Remote Computer Connections to a Remote Computer Connections to a Remote Computer Connections to a Remote Computer Connections to a Remote Computer
Input circuit
same for all presets and reset
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22k
22k
10nF
Common
Pull-up to +5V or
Pull-down 0V
for this group.
DSP
HCT14
HCT14
Figure 2-26 Connections to a Remote Computer Figure 2-26 Connections to a Remote Computer Figure 2-26 Connections to a Remote Computer Figure 2-26 Connections to a Remote Computer Figure 2-26 Connections to a Remote Computer
(with Pull-ups at +5 V) (with Pull-ups at +5 V)
(with Pull-ups at +5 V) (with Pull-ups at +5 V) (with Pull-ups at +5 V)
J3
Signal Gnd
Note:
Amplifier signal ground must be
connected to controller ground.
/Preset-3
/Preset-2
/Preset-1
/Preset-4
/Reset
26
5
24
6
25
23
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