Keithley 7037, Инструкция по эксплуатации

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Card Connections and Installation
4-11
Typical digital I/O connection schemes
Output connection schemes
The following examples show output connections from the
card to external circuitry and summarize the required inter-
nal connections on the card. Each example assumes negative
true logic is used. To conf gure for positive true logic, refer
to the Conf guring digital I/O output logic paragraph.
Solenoid control —
Figure 4-12 shows a digital output con-
nection scheme to control solenoids. This example assumes
that an external 24V source is being used. A solenoid is ener-
gized when the corresponding output channel is turned on
(closed).
Figure 4-12
Digital output, solenoid control
Motor control —
Figure 4-13 shows a digital output connec-
tion scheme to control small 12V dc motors. An external 12V
source is used to provide the necessary voltage level. A
motor is turned on when the corresponding output channel is
turned on (closed).
Figure 4-13
Digital output, motor control
OUT 31
V
EXT
Solenoids
7037
OUT 32
OUT 33
GND
24V
+
–
Internal Connections:
External voltage source (V
EXT
) selected.
OUT 39
V
EXT
Motors
7037
OUT 40
GND
12V
+
–
Internal connections:
External voltage source (V
EXT
) selected.
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