TR660IP
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10.4.3 Info page (3/3)
10.4.3.1 TR660IP Analog
- Currently installed firmware version
- Currently selected program
- Reset input 0 = open, 1 = closed
- Current IP-address of the device
- Actual voltage- / current values of the analogue outputs
10.4.3.2 TR660IP RS485
- Currently installed firmware version
- Currently selected program
- Reset input 0 = open, 1 = closed
- Current IP-address of the device
- Activity on the RS485 bus (yellow dot flickering)
10.5 Special functions
10.5.1 2 of x
For each alarm the
function “2 of x” can be activated. That is at least two of the sensors associated with the
alarm must meet the conditions for the alarm to trigger the alarm.
- To activate the function, there must be min. two sensors parametrised for the desired
alarm.
-
Sensor errors are ignored. If only 2 sensors are assigned to a “2 of x” alarm and one of
these sensors has a sensor error (short-circuit or interruption), it is no longer possible
to trigger an alarm. In this case, monitor the sensors for errors on another alarm.
10.5.2 Rate of change of temperature (ROCOT)
The ROCOT function sets a new average every 10s. The slope is calculated from the actual and the previous
average.
10.5.2.1 Slope (°C / s)
If the calculated slope is greater than the set value, the alarm becomes active.
10.5.2.2 Time (s)
Alarm if the set limit value would be reached at the same slope after the set time. In the time function, the
calculated slope is multiplied by the set time. The current measured value is then added to this value. If the
result is greater than
the set alarm value for “alarm on”, the alarm is triggered.
10.5.2.3 Backshift conditions
If a ROCOT alarm is active, two conditions must be met for the alarm to go back.
•
The current measured value must be smaller than the switch-
off value for “alarm off”
•
The calculated slope must be negative
If both conditions are fulfilled, the alarm switches off again.
10.5.3 Cyclic relay test
For each alarm, a “cyclic relay test” can be activated. This switches the relay according to the set parameters.
The cyclic switching ensures a longer service life of pumps and motors, which a normally never in operation.
This prevents a defect (sticking due to corrosion, …) on the connected pumps or motors.
10.5.4 Differential temperatures
With the TR660IP a difference between 2 sensors can be calculated. The two next smaller measuring inputs
are always used for the source sensors. For example, if you want to calculate a difference on measurement
input 4, sensor 3T
– sensor 2T is used.