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MDL-DataManager™ Reference Guide Architectural Energy Corporation

Appendix A – Module Wiring Connections 32

Appendix A – Module Wiring Connections

Architectural Energy Corporation (AEC) stocks signal conditioning modules for use

with a wide array of AEC-supplied or third-party sensors. These different signal

conditioning modules allow the MicroDataLogger unit (MDL) to connect to nearly any

sensor or meter on the market based on the sensor or meter output signal. Each

separate sensor or meter to be used with the MicroDataLogger data acquisition

system will require a module to connect to the MDL to the sensor. It is important to

note that AEC carries a number of sensors that are pre-wired to modules for your use:

temperature, humidity, occupancy, and lite level.

General Signal

Measurement

Modules

A variety of plug-in modules are available for interfacing the MDL to a range of sensor

and transducer output signals. Most third-party sensors and transducers – including

those carried by AEC – can be used with the MDL.

The MDL-DataManager software enables the user to scale the signal being read and

assign an appropriate engineering unit of measure. Sensor or field wiring is connected

to the modules via a 4-circuit, plug-in, screw type terminal block. Current can be

measured directly using the 20 mA DC module. Signal conditioning modules for full-

scale ranges above 5 volts use a precision resistor divider to attenuate the input

signal.

Note:

The 20 mA DC signal conditioning module, model ADC-33-3, can be

damaged by transient voltages if it is connected to the current loop circuit

while the circuit is energized.

Screw

Part/Module Number

Designations for

ADC-33-3 (4-20mA)

1 – Signal Input

Wiring

VDC-19-3 (5V)

2 + Signal Input

VDC-29-3 (10V)

3 – 12 Vdc Return

4 + 12 Vdc Power Out

Part/Module Number

VAC-17-3 (333mV)

1 n/c

2 mV Input Low

3 mV Input Hi

4 n/c

Part/Module Number

COUNT-80-3 (pulse)

1 Switch (–)

2 Switch (+)

3 n/c

4 n/c

Part/Module Number

STATUS-81-3 (AC/DC)

1 n/c

2 n/c

3 Voltage Low

4 Voltage Hi

1 2 3 4

module

label

terminal block numbered left to right