MPE DP SERIES II, Руководство по эксплуатации и обслуживанию

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terminals 1 and 3 of JS1. The input impedance between terminals 1 and 3 is 10K and paralleling
the additional resistor produces an equivalent resistance of 5K. The 2 mA current source will
produce 10.0 V at the external voltage reference input which will produce full scale output
voltage.
The current set point, over voltage trip, and over current trip can be programmed in the same
manner. Referring to the Table 3.1 for terminal identification, use terminal 22 to program the
current set point, terminal 4 to program over voltage trip, and terminal 23 to program over
current trip. The power supply has been calibrated to produce full scale output voltage and
current with 10.0 V inputs at the external reference input terminals. Furthermore, over voltage
and over current trip have been calibrated to trip at 110% full scale output voltage and current
with 10.0 V inputs at the external reference input terminals.
If the applied voltage at any input is greater than 12.50 V, the pgl (program line) LED will light
and the power supply will turn off.
3.5 Voltage and Current Monitoring
Four outputs are provided for monitoring output voltage and output current and for the master
and slave units. As illustrated in figure 3.27, output monitoring voltage, VO2, can be obtained
by monitoring the voltage between terminals terminal 5 of JS1 and terminal 1,2 or 20 of JS1 and
between terminal 16 of JS1 and terminal 1,2 or 20 of JS1, respectively. Output current, IO2, can
be obtained by monitoring the voltage between terminals terminal 24 of JS1 and terminal 1,2 or
20 of JS1 and between terminal 31 of JS1 and terminal 1,2 or 20 of JS1, respectively. Like the
programming inputs, full scale output voltage and current will produce 10.0 V. The output
impedance at these terminals is 100 Ù. The master and slave modules both have a connector
designated as JS1 and work in an identical manner.
Figure 3.27 Monitoring output (a) voltage
and (b) current
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