Siemens 7MB2335, Operating Instructions Manual, Page: 96 / 168

Operation
5-46
Operating instructions ULTRAMAT 23 gas analyzer
C79000-B5276-C216-03
You can carry out the following tests:
S
Test analog outputs
You can use this dialog to set any value of the output current
between 0 and 20 mA. There are four analog outputs (0/4 to
20 mA). To test these outputs, connect an ammeter to the
corresponding analog outputs on plug X80 and measure the output
current.
Please refer to Chapter 3 for the pin assignments of plug X80.
S
Test of relays
You can use this dialog to select a relay for testing. There are eight
relays whose contacts you can test. Connect a ohmmeter to the
corresponding relay outputs on plug X80. You can process the
following parameters:
Relay number: One of the relays 1 to 8 (for analyzers with option
module: relays 1 to 16) or ”-” (no relay)
Condition: The current state of the selected relay ( active or
inactive ; inactive in the Fig.).
Please refer to Chapter 3 for the pin assignments of plug X80/X50.
S
External solenoid valve
You can use this dialog to trigger external solenoid valves for the
zero and calibration gas supplies via the relay contacts. Use the
arrows keys
↑
and
↓
to select either the zero gas valve ( ZV ) in the
first line and the calibration (span) gas valve ( SV ) in the third line.
Call the selected valve using the ENTER key. Switch the previously
assigned relay using any arrow key in the second or fourth line (the
value on the right toggles between
OFF and ON ). The measured
values output on the display during this test usually change following
the switching operation.
S
Test of inputs (binary test)
After calling this dialog, apply a voltage of 24 V to one of the three
inputs ”Pump ON/OFF”, ”CAL” or ”SYNC”. The result is displayed in
the fourth line (no input in this case).
The external binary inputs of analyzers with option module can be
tested in the menu ”Binary inputs” (see Section 5.10.1.3).
Analog 1: 0.20 mA
Analog 2: 0.40 mA
Analog 3: 1.55 mA
Analog 4: 2.60 mA
51032a
Test Test of relays
Relay number 1
Condition: inactive
Press ESC to cancel
51032b
51032c
130 mg/m
3
NO ZV
89 mg/m
3
CO OFF
249 mg/m
3
SO
2
SV
20.77 % O
2
OFF
Test of inputs
Press ESC to cancel
Active input:
None
51032d