PM9109BF
Slope
The output frequency at SDO (fp) may be adjusted during cali
bration according to the formula:
fp = 11.16
x
FOSC x
3.5795E6
II IV
IR2
x
40062.5
Ks
where
FOSC =
Oscillator frequency (2MHz --- 4MHz)
II
=
IV
=
IR
=
KS
=
Input current for current sensor input
(16µA at rated line current)
Input current for voltage sensor input
(14µA at rated line voltage)
Reference current (Typically 50µA)
Slope constant (1025 --- 16384)
(Default 11389)
For default rated conditions the output frequency on SDO will be 3.5Hz. The
display is incremented after every 64th pulse on SDO as shown in the block
diagram below.
40062.5*
Pulses / s
DR-00 93 8
1/K s
1 / 64
Display
Increment
fp
USEFUL NOTES:
1.
A context sensitive help screen is available throughout the programme
and is invoked by using [F1] or [ALT]-H.
2.
Hot key features are available for a number of functions and can be
identified for use by the highlighted character of the field. For example,
[ALT]C for COMMS field.
3.
To exit from the programme [Esc] or [Alt]-X
12/18
sames