SATEC PM130 PLUS Manual - Manual (Page 81)

‎Chapter 5 Configuring T H E P M 1 3 0 P L U S
General M E T E R S E T U P
PM130 PLUS Powermeter Series 81
Display
Label
Option Range Description
Hi Full scale Defines the high engineering scale (in primary
units) for the analog output corresponding to a
highest output current (1 or 20 mA)
When you select an output parameter for the analog output channel, the
default engineering scales are set automatically. They correspond to the
maximum available scales. If the parameter actually covers a lower range,
you can change the scales to provide a better resolution on an analog
output.
Scaling Non-Directional Analog Outputs
For non-directional analog outputs with a 0-1mA, 0-20mA or 4-20mA
current option, you can change both zero and full engineering scales for
any parameter. The engineering scale need not be symmetrical.
Scaling Directional Power Factor
The engineering scale for the signed power factor emulates analog power
factor meters.
The power factor scale is -0 to +0 and is symmetrical with regard to
 1.000 (-1.000  +1.000). The negative power factor is scaled as -1.000
minus the measured value, and non-negative power factor is scaled as
+1.000 minus the measured value. To define the entire power factor
range from -0 to +0, the default scales are specified as -0.000 to 0.000.
Scaling ±1mA Analog Outputs
Programming engineering scales for directional ±1mA analog outputs
depends on whether the output parameter represents unsigned (as volts
and amps) or signed (as powers and power factor) values.
For an unsigned output value, you can change both zero and full
engineering scales.
For a signed (directional) value, you should only provide the engineering
scale for the +1 mA output current.
The engineering scale for the 0 mA output current is always equal to zero
for all values except the signed power factor, for which it is set to 1.000
(see
Scaling Directional Power Factor above).
The meter does not allow access to the low scale setting if the parameter
is directional. Whenever the sign of the output parameter is changed to
negative, the meter automatically uses the full engineering scale setting
for +1 mA with a negative sign.
Scaling Analog Outputs for 0-2 mA and ±2 mA
The 0-1mA and ±1mA current outputs provide a 100% overload, and
actually output currents up to 2 mA and ±2mA whenever the output value
exceeds the engineering scale you set for the 1 mA or ±1mA.
The output scales for 0-1 mA and ±1 mA analog outputs are programmed
for 0 mA and +1 mA regardless of the required output current range.
To use the entire output range of 2 mA or ±2 mA, set the analog output
scales as follows:
 0-2 mA: set the 1 mA scale to ½ of the required full scale output
for uni-directional parameters, and set the 0 mA scale to the
negative full scale and the 1 mA scale to zero for bi-directional
parameters.