SATEC SA300 ezPAC Operation Manual - Manual (Page 76)

Chapter 7 Programming the SA300 Using Counters
76 SA300 Substation Automation Unit
Scaling Analog Outputs for 0-2 mA and ±2 mA
The output scales for 0-1 mA and ±1 mA analog outputs are programmed for 0 mA
and +1 mA regardless of the desired output current range. To use the entire output
range of 2 mA or ±2 mA, set the analog output scales in your device as follows:
- 0-2 mA: set the 1 mA scale to 1/2 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;
- ±2 mA: set the 1 mA scale to 1/2 of the required full-scale
output for both uni-directional and bi-directional parameters.
For example, to provide the 0 to 2 mA output current range for volts measured by the
device in the range of 0 to 120V, set the 1 mA scale to 60V; then the 120V reading is
scaled to 2 mA.
Using Counters
The SA300 has 32 nine-digit signed counters that count different events. Each
counter is independently linked to any digital input and count input pulses with a
programmable scale factor. You can link a number of digital inputs to the same
counter. Each counter can be incremented or decremented through the Control
Setpoints in response to any internal or external event.
To configure the device counters, select General Setup from the Meter Setup menu,
and then click on the Counters tab.
The available options are described in the following table:
Option Range Default Description
Counter Setup
Roll over 1 to 1,000,000,000 1,000,000,000 The value at which the counter rolls over
to zero
Reset value -999,999,999 -
999,999,999 0 The value written to the counter at reset