Saimo 6101 - Page 98

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6101

6101 Belt

Belt

Belt Scale

Scale

Scale Integrator

Integrator

Integrator Operating

Operating

Operating and

and

and Service

Service

Service Manual

Manual

4.3.4

4.3.4 Current

Current

Current Output

Output

Output (Optional)

(Optional)

Refer to Figure 4 -4 Current Output Diagnostics Flow Chart, check the flowrate at different

current output ranging from 4mA to 20mA (full range) at a certain interval. In order to check

the flowrate at 4mA current output, power up the 6101 and run the belt empty. If the flowrate

indication is not zero, reset it by performing zero calibration. Remove the connections from

the current output terminals which are then connected to the DC milli-amperometer correctly

(Note that the range of milli-amperometer should exceed 20mA). At this time the current

output on the milli- amperometer should be 4mA. If a minor deviation is found, the reading

can be corrected by adjusting the potentiometer. However, in case that a remarkable

deviation exists, the current output board is bad and needs to be changed.

When the 6101 gives correct current output at zero flowrate, the current output at various

known flowrates should be checked. Apply reference weights on the scale and press RUN

key on the 6101 integrator to determine the flowrate at a percentage of the full load. For

example, a belt scale with scale capacity of 100t/h displays “ 10 ” , then the reference weight

is 10% of the scale capacity. In this case the milli-amperometer shall give a reading with the

same percentage of the full scale. For this example, the reading of the milli-amperometer

shall be 16 (20-4)X10%+4mA = 5.6mA. If incorrect reading occurs, the current output board

should be repaired or changed.