Condec UPS3000, Installation, Operation & Maintenance Manual

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56 UPS3000/UPS3110/UPS3210 Operation & Maintenance Manual
7.4 Analog Output Option (0 VDC to +10 VDC)
NOTE: Recommended factory installed option. Also consult factory for battery models with this option.
UPS3000A[][], UPS3000C[][], UPS3210A[][], UPS3110C[][], UPS3110A[][], UPS3210C[][] used in
conjunction with +4 to +20 mA DC option use PN 57785
UPS3000A[][], UPS3000C[][], UPS3210A[][], UPS3110C[][], UPS3110A[][], UPS3210C[][] used in
conjunction with +4 to +20 mA DC option and RS232 Simplex option use PN 57799
The output voltage at 0 psi is 0 VDC and the output voltage at 100% full scale of any range is + 10 VDC. Output
impedance must be greater than 10,000 Ohms. Connections are made via the round military connector for the
“Return” (Pin B) and for the “Output Voltage” (Pin C).
Digital circuitry is not used in the generation of the output voltage. Rather, the output voltage is derived directly
from the signal conditioner of the transducer. Due to the nature of three pressure ranges and the one pressure
transducer, the signal conditioner is set up with three different gains.
On “Gage Only” or “Absolute Only” units, as pressure ranges are selected, there may be slight adjustments
necessary to maintain 0 VDC at 0 psi and + 10 VDC at 100% full scale input pressure. On the “Absolute/Gage
Switch Selectable” units, the adjustments can be more rigorous.
It is always best to set the “zero” control (R3) first and the “Span” control (R4) last. These controls may be found
on the top portion of the circuit board mounted at the rear of the chassis. Select the range which is most
appropriate for the measurement application. While the unit is at 0 psi, adjust R3 until the output voltage is 0
VDC. Now apply full-scale pressure for that range and adjust R4 until the output voltage is + 10 VDC.
7.5 Analog Output Option (+4 mA DC to +20 mA DC)
NOTE: Recommended factory installed option. Also consult factory for battery models with this option.
UPS3000A[][], UPS3000C[][], UPS3210A[][], UPS3110C[][], UPS3110A[][], UPS3210C[][] used in
conjunction with 0 to +10 VDC option use PN 57785
UPS3000A[][], UPS3000C[][], UPS3210A[][], UPS3110C[][], UPS3110A[][], UPS3210C[][] used in
conjunction with 0 to +10 VDC option and RS232 Simplex option use PN 57799
The output current at 0 psi is +4 ma DC and the output current at 100% Full Scale of any range is +20 ma DC.
Output impedance must be less than 500 ohms. Connections are made via the round military connector for the
“Output Current” (Pin A) and for the “Return” (Pin B).
Digital circuitry is not used in the generation of the output current. Rather, the output current is derived directly
from the signal conditioner of the transducer. Due to the nature of three pressure ranges and the one pressure
transducer, the signal conditioner is set up with three different gains.
On “Gage Only” or “Absolute Only” units, as pressure ranges are selected, there may be slight adjustments
necessary to ma4 ma DC at 0 psi and +20 ma DC at 100% Full Scale input pressure. On the “Absolute/
Gage Switch Selectable” units, the adjustments can be more rigorous.
It is always best to set the “Zero” control (R1) first and the “Span” control (R2) last. These controls may be found
on the top portion of the circuit board mounted at the rear of the chassis. Select the range which is most
appropriate for the measurement application. While the indicator is at 0 psi, adjust R1 until the output current is
+4 ma DC. Now apply full scale pressure for that range and adjust R2 until the output current is + 20mADC.