Teledyne 3010MA, Руководство по эксплуатации, Страница: 30 / 88

Part 1 Control Unit Model 3010MA
Teledyne Analytical Instruments
30
are given where each function is described in the paragraphs below. At the
end of this section is a complete pin-out description.
Figure 3-5: Equipment Interface Connector Pin Arrangement
Analog Outputs: There are four dc output signal pins —two pins per
output. For polarity, see Table 3-1. The outputs are:
1. 0–1 V dc % of Range: Voltage rises linearly with increasing
oxygen, from 0 V at 95% O
2
to 1 V at full scale 100% O
2
. (Full
scale is 100% O
2
for all ranges.)
2. 0–1 V dc Range ID: 0.25 V = Low Range, 0.5 V = Medium
Range, 0.75 V = High Range.
3. 4–20 mA dc % Range: (M option only) Current increases
linearly with increasing oxygen, from 4 mA at 0 ppm to 20 mA
at full scale. (Full scale = 100% O
2
for all ranges.)
4. 4–20 mA dc Range ID: (This option is not included unless
otherwise noted) 8 mA = Low Range, 12 mA = Medium
Range, 16 mA = High Range.
Table 3-1: Analog Output Connections
Pin Function
3 (+) Range ID, 4-20 mA, floating (special option)
4 (–) Range ID, 4-20 mA, floating (special option)
5 (+) % Range, 4-20 mA, floating
6 (–) % Range, 4-20 mA, floating
8 (+) Range ID, 0-1 V dc
23 (–) Range ID, 0-1 V dc, negative ground
24 (+) % Range, 0-1 V dc
7 (–) % Range, 0-1 V dc, negative ground
Alarm Relays: There are nine pins dedicated to the internal alarm
relay contacts. Each set of three pins provides one set of Form C relay
contacts. Each relay has both normally open and normally closed