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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
3132D12
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
3132D13
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
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