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Building Technologies
Modular Heating Controller RMH760B
CE1P3133en
HVAC Products
13 Function block faults
05.02.2007
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Faults > Fault input 1
(or
2, 3
or
4
)
Operating line
Range
Factory setting
Limit value fault on
0 / 1*
1
Limit value fault off
0 / 1*
0
* Depending on the input identifier; the example given here applies to a digital input
If
Limit value fault on
is greater than
Limit value fault off
, the input is monitored for over-
shoot.
Limit value fault on
: 80
°C
Limit value fault off
: 75
°C
If the temperature exceeds 80 °C, a fault is identified; if it drops again to a level below
75 °C, the fault is considered rectified.
ERROR
ON
OFF
313
2D
12
If
Limit value fault off
is greater than
Limit value fault on
, the input is monitored for
undershoot.
Limit value fault on
:
10 °C
Limit value fault off
:
12 °C
If the temperature falls below 10 °C, a fault is identified; if it returns to a level above
12 °C, the fault is considered rectified.
ERROR
ON
OFF
313
2D
13
13.9 Communication
When communication is activated, the impact on fault handling is as follows:
•
Fault status messages are always delivered via bus and can be further handled by
other Synco devices
•
Fault status messages from other Synco™ 700 devices are shown on the controller
•
Fault status messages from other Synco™ 700 devices can be delivered to a fault
relay
Fault status messages can be acknowledged from a remote location (e.g. from the
operator station using the OCI700.1 service tool).
It can be selected whether fault status messages with self-holding may also be reset
from a remote location or whether this must always be made locally.
Example 1
Example 2
