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Teledyne API - Model T200H/T200M Operation Manual
3.4.4. CONNECTING THE STATUS OUTPUTS
Note
PIN #
STATUS
SYSTEM OK
1
CONC VALID
2
3
HIGH RANGE
ZERO CAL
4
5
SPAN CAL
DIAG MODE
6
7
LOW SPAN CAL
8
Not Used
D
EMITTER BUS
Not Used
+
DC POWER
Digital Ground
07270D DCN7141
The analyzer's status outputs to interface with a device that accepts logic-level digital
inputs, such as programmable logic controller (PLC) chips, are accessed through a 12
pin connector labeled STATUS on the analyzer's rear panel.
1
2
3
4
Figure 3-8:
Most PLCs have internal provisions for limiting the amount of current the input
will draw. When connecting to a unit that does not have this feature, external
resistors must be used to limit the current through the individual transistor
outputs to ≤50mA (120 Ω for 5V supply).
Table 3-6: Status Output Signals
ON if no faults are present.
ON if concentration measurement (NO, NO
OFF any time the hold-off feature is active.
ON if unit is in high range of the Auto Range Mode.
ON whenever the instrument is in ZERO point calibration mode.
ON whenever the instrument is in SPAN point calibration mode.
ON whenever the instrument is in diagnostic mode.
ON when in low span calibration (optional equipment necessary)
The emitters of the transistors on pins 1-8 are tied together.
+ 5 VDC, 300 mA (combined rating with Control Output, if used).
The ground level from the analyzer's internal DC power supplies
STATUS
+
5
6
7
8
D
Status Output Connector
CONDITION (ON = CONDUCTING)
Getting Started
or NOx) is valid.
2
35
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