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Siemens Building Technologies
Commissioning instructions OZW775 V2.01
CE1C5663en
HVAC Products
Parameterize OZW775
22.06.2012
Command sequence: Settings > Faults > Local > Fault input 1…20
Data point
Explanation, example
Limit value fault on
Digital inputs N.D1…N.D8,
Universal inputs N.X1…N.X8
with Input identifier = Digital
Default val: 1
Setting val: 0, 1
At DP "Limit value fault on", fault status "1" is set
for the digital inputs.
If the fault source is connected to N.X1…N.X8,
the following setting is required:
"Input identifier > N.X_ = Digital".
–
Limit value fault off
Digital inputs N.D1…N.D8,
Universal inputs N.X1…N.X8
with Input identifier = Digital
Default val: 0
Setting val: 0, 1
At DP "Limit value fault off", fault status "0" is set
for the digital inputs.
If the fault source is connected to N.X1…N.X8,
the following setting is required:
"Input identifier > N.X_ = Digital".
–
Limit value fault on
1)
Universal inputs N.X1…N.X8
with Input identifier = °C
Default val: 30.0 °C
Setting val: -50.0…500.0 °C,
Resolution 0.1 °C
°C applies to temperature values.
Other analog signals, such as
%, kJ/kg, m/s, bar, Pa can also
be monitored.
DP "Limit value fault on" is displayed if an
analog signal (e.g. °C) is connected to universal
inputs N.X1…N.X8. A fault status message is
triggered when a limit value is violated.
Example: N.X3 is configured for temperature
monitoring (°C) and connected to fault input 1.
Configure the following:
"Input identifier > N.X3 = °C" and "Faults >
Fault input 1 = N.X3".
–
Limit value fault off
1)
Universal inputs N.X1…N.X8
with Input identifier = °C
Default val: 25.0 °C
Setting val: -50.0…500.0 °C,
Resolution 0.1 °C
DP "Limit value fault off" is displayed if an
analog signal (e.g. °C) is connected to universal
inputs N.X1…N.X8. A fault status message is
when a limit value is violated.
–
Fault status message delay
Default val: 00:05 mm:ss
Setting val: 00:00…59:55
Resolution
00:05
The fault status message delay acts as a filter
for short-term fault events. You can set the time
the central communication unit should wait until
it begins to handle a fault.
–
Fault acknowledgement
Default val: None
Setting val: None
Acknowledge
Define at DP "Fault acknowledgement" if an
existing fault requires acknowledgement via
"Ack" button on the central communication unit.
–
Fault priority
Default val: Urgent
Setting val: Urgent
Not
urgent
Setting values "Urgent" and "Not urgent" are
used as a filter to send fault status messages.
–
1)
When 2 fault inputs "x" (from FB "Faults") are configured to fault input N.X_, an analog signal (e.g.
temperature) can be monitored for "Limit value high" and "Limit value low" and normal value range
between the values.
Fault input 1…20
continued
