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Teledyne API N500 CAPS NO
X
Analyzer with NumaView™ Software
089770000 Rev 05
C
ONNECTING THE
D
IGITAL
I/O
E
XPANSION
B
OARD
O
PTION
The connections on this board include three relay alarms, five digital outputs, and three
isolated digital input controls. The
Relays
can be mapped to reflect various internal
instrument conditions and states. The
Outputs
are isolated from the instrument and
consist of open collector transistors with a common ground; they can be mapped to
reflect various internal instrument conditions and states; they can be used to interface
with devices that accept logic-level digital inputs, such as Programmable Logic
Controllers (PLCs). The
Inputs
are also isolated but share the same ground as the
Outputs; they will work with relays, open collectors, or 3.3 V – 24 V logic. Pull low to
activate. DI1 and DI2 are fixed (not mappable) for remote zero and span calibrations.
Figure 2-5. Digital I/O Connector Panel Option
Table 2-4. Digital Input/Output Pin Assignments
PIN
DESCRIPTION
Relays
NO
RLY1
Relay Alarms, user-configurable through the
Setup>Digital Outputs menu.
COM
NC
NO
RLY 2
COM
NC
NO
RLY 3
COM
NC
Digital Outputs and Inputs
DO1
Digital Outputs mappable in the Setup>Digital Outputs
menu, and viewable in the Utilities>Diagnostics>Digital
Outputs menu
DO2
DO3
DO4
D
O5
GND Ground
D
I
1
Digital Input1 = Remote Zero Cal
Digital Input2 = Remote Span Cal
(Digital Input3 not used)
View status in Utilities>Diagnostics>Digital Inputs menu
D
I2
D
I3
GND Ground
Summary of Contents for N500
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