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Electro Industries/GaugeTech
Doc # E107706 V1.25 2-12
2.8: Nexus External I/O Modules (Optional)
The following multiple analog or digital I/O modules mount externally to the Nexus 1250/1252 Monitor.
The Nexus 1250/1252 Monitor supports up to four I/O modules using internal power. Use the additional
power supply, EIG PSIO, to extend I/O capability. See section 3.4 for mounting diagrams. See Chapter
9 for details on installation and usage of the Nexus External I/O Modules.
QAnalog Transducer Signal Outputs(Up to two modules can be used with the Nexus 1250/1252.)
1mAON4: 4 Analog Outputs, self powered, scalable, bidirectional.
1mAON8: 8 Analog Outputs, self powered, scalable, bidirectional.
20mAON4: 4 Analog Outputs, self powered, scalable.
20mAON8: 8 Analog Outputs, self powered, scalable.
QAnalog Transducer Inputs (Multiple modules can be used.)
8AI1: 8 Analog Inputs 0–1mA, scalable and bidirectional.
8AI2: 8 Analog Inputs 0–20mA, scalable.
8AI3: 8 Analog Inputs 0–5V DC.
8AI4: 8 Analog Inputs 0–10V DC.
QDigital Dry Contact Relay Outputs (Multiple modules can be used.)
4RO1: 4 Relay Outputs 10 Amps, 125VAC, 30V DC, Form C.
QDigital Solid State Pulse Outputs (Multiple modules can be used.)
4PO1: 4 Solid State Pulse Outputs, Form AKYZ pulses.
QDigital Inputs (Multiple modules can be used.)
8DI1: 8 Digital status inputs Wet/Dry Auto Detect, up to 300VAC/DC.
QOther I/O Accessories
PSIO: Additional power supply for up to six I/O modules. This unit is necessary if you are
connecting more than four I/O modules to a Nexus 1250/1252 Monitor.
MBIO: Bracket for surface-mounting I/O modules to any enclosure.