Manual

PROGRAMMING EXAMPLES OF THE ANALOGUE OUTPUTS

Power retransmission by means of a 0-20mA analogue output.

It’s necessary to measure a consumed power up to 100kW and retrans-

mit this value by means of a signal from 4 to 20 mA: the module to be

used is MOV2 (2x from 0 to 20mA), the instrument is to be programmed

as follows:

VARIABLE: W∑ (system active power).

MIN OUT: 20.0% means 4 mA. The calculation to be carried out is the fol-

lowing: (100*minimum output) / fullscale output =100*4mA/ 20mA=20%.

MAX OUT: 100.0% means 20mA. The calculation to be carried out is:

(100*maximum output) / fullscale output = 100*20mA/20mA= 100.

MIN INPUT: 0,0k; the multiple k,M,G can be selected on the instrument

according to the chosen VT and CT values.

MAX INPUT: 100.0k; the k, M, G multiples can be selected on the instru-

ment according to the selected VT and CT values.

Retransmission of the POWER FACTOR (PF) by means of the

0-20mA analog output.

It’s necessary to retransmit the whole range of the allowed values for the

PF with a signal from 0 to 20mA. Particular attention must be paid to the

value of the PF variable which may vary from C0,001 and L0,000 (for each

phase): these values will be retransmitted and will then correspond to 0

and 20 mA. When the PF will have a value equal to 1, being in the mid-

dle between C0,001 and L0,000, the value of the output will correspond

to the middle of the scale, that is 10mA. As a consequence, the instru-

ment will have to be programmed as follows:

VARIABLE: PF L1 (or L2 or L3 or PF∑).

MIN OUT: 0,0%.

MAX OUT: 100,0%.

MIN INPUT: C0,001 (the C symbol shows a CAPACITIVE value).

MAX INPUT: L0,001 (the L symbol shows an INDUCTIVE value). L0,001

has been chosen as minimum value to be set in order to avoid any unde-

sirable swifting of the repeated outputs.

CARLO GAVAZZI

Automation Components