Ametek Sorensen Asterion DC Series, Operation Manual

Page: 139 / 157

Asterion DC Series Calibration
M330460-01 Rev D 3-55
3.6.2 Remote Power Programming by Voltage Source
The DC voltage source is connected between Pin 33 (PPRG_VSOUR) and the
return Pin 18 (RTN_PRG) and Analog Reference source is selected as Voltage from
the front Panel. Refer to Figure 3-108.
The Full-Scale voltage value can be modified to any voltage between 2V to 10V from
front panel screen. Refer to Section 3.1.8.4. Default FSC voltage value is 10V, where
10V corresponds to 100% output power. The corresponding voltage-programming
coefficients for output power are (100% rated output power) / FSC VDC. This
produces transfer functions for output power, as follows:
P
out
= Vdc * (100% rated output power) / 10 VDC), with Vdc in volts, or
P
out
= Vdc * (100% rated output power) / FSC VDC), with Vdc in volts.
Figure 3-108. Remote Power Programming Using 0-10 VDC Source
3.6.3 Remote Power Programming by 4-20mA Source
A 4-20mA current source is connected between Pin 33 (PPRG_VSOUR) and the
return Pin 18 (RTN_PRG) and select the Analog Reference Source as 4-20mA in
front panel. Refer to Figure 3-109.
The transfer function for the output power will be as follows:
P
out
= (I
4-20mA
– 4) (100% rated output power) / 16, with I
4-20mA
in mA
Which sets 0W output power at 4mA and 100% rated power at 20mA.
Figure 3-109. Remote Power Programming Using 4-20mA Source
1 15
16
44
31
30
18
0 2VDC
to
0 10VDC
33 PPRG_VSOUR
1 15
16
44 31
30
18
4 20mA
Current
Source
33 PPRG_VSOUR