Operational faults

8.3Temperature monitoring

The flow temperature and the room temperature can be monitored for any deviations. This func- tion is activated in Co5 -> Fb20. The controller issues an alarm when:

￿the flow temperature deviates from its set point by more than 10 °C for more than 30 minutes

￿the room temperature falls below its set point by 2 °C for more than 30 minutes ￿the return flow temperature limitation is active for more than 30 minutes.

When one of these conditions occurs, the bit for the associated sensor is set in holding regis- ter 857. A set bit in holding register HR 857 causes the bit 4 to be set in the error status register FSR2 (HR 61) and in the error archive register 2 (HR 63) and the error counter (HR 64) is incre- mented.

Function

WE

Configuration

Temperature monitoring

OFF

Co5 -> Fb20 = ON

Holding register 857 (

 

 

appears on the right-hand side of the set bit number)

 

Number = Bit number in HR

0 1 2 3 4 5 6 7 8 9 10 11 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VFprim:

Measured value (set point + 10 °C)

RüFprim:

Limitation active

 

(actual return flow blinks in InF5)

VF1:

Meas. value > (set point +10 °C)

RüF1:

Limitation active

RF1:

Meas. value < (set point – 2 °C)

VF2:

Meas. value > (set point + 10 °C)

RüF2:

Limitation active

RF2:

Meas. value < (set point – 2 °C)

VF3:

Meas. value > (set point + 10 °C)

RüF3:

Limitation active

RF3:

Meas. value < (set point – 2 °C)

VFTW:

Meas. value > (set point + 10 °C)

RüFTW:

Limitation active

 

(actual return flow blinks in InF4)

70EB 5179 EN

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Samson 5100, 5179 operating instructions Temperature monitoring, Vftw

5179, 5100 specifications

The Samson 5179 and 5100 series are renowned for their innovative design and robust performance in various industrial applications. These models are particularly known for their precision control and reliability in managing fluid flow systems.

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