Greystone Energy Systems TE500AS Series Manuel utilisateur

Page 1

INTRODUCTION

The room temperature transmitter is designed for temperature measurement of

occupied spaces and utilizes a precision sensor and a transmitter that provides a high

accuracy signal with excellent long term stability, low hysteresis and fast response. It is

available in various ranges. The transmitter is housed within an attractive, low prole

wall mount enclosure.

BEFORE INSTALLATION

Read these instructions carefully before installing and commissioning the temperature

sensor. Failure to follow these instructions may result in product damage. Do not use

in an explosive or hazardous environment, with combustible or ammable gases, as

a safety or emergency stop device or in any other application where failure of the

product could result in personal injury. Do not exceed device ratings.

MOUNTING

The plate sensor installs directly on a standard electrical box and should be mounted ve feet from the

oor of the area to be controlled. Do not mount the sensor near doors, opening windows, supply air

diusers or other known air disturbances. Avoid areas where the sensor is exposed to vibrations or rapid

temperature changes.

Before mounting the enclosure, rst complete the wiring instructions outlined below. Once wiring is

complete, secure the plate to the junction box using the supplied mounting screws as shown in Figure 2.

WIRING

Use shielded twisted pair wiring of at least 22 AWG for all connections and do not run the signal or power

wires in the same conduit with wiring used to supply inductive loads such as motors. Disconnect the

power supply before making any connections to prevent electrical shock or equipment damage. Make all

connections in accordance with national and local electrical codes.

The transmitter is available with either 4-20 mA, 0-5 Vdc or 0-10 Vdc output signals. Follow the example

wiring diagrams to determine the correct wiring for the product. All models have the same terminal

functions. For 4-20 mA loop powered operation, only PWR and OUT are required. The COM terminal is

only used for voltage output types or for AC power.

Ensure the controller Analog Input (AI) matches the transmitter output signal type before power is

applied. The device is reverse voltage protected and will not operate if connected backwards. The voltage

output signal has a minimum load that it is able to drive and the current signal has a maximum load. Follow the ratings in the Specication section

or inaccurate readings may result. If the product has a dual sensor probe, connect the RTD (Red/Black) leads to the SENSOR terminals. The second

sensor is Green/White.

OPERATION

The product should be allowed to warm-up for several minutes before attempting to verify accuracy. Allow

the transmitter to operate for 20 minutes before any calibration is performed. Operation can be veried by

measuring the output signal. For voltage output models, measure the voltage between the OUT and COM

terminals. The voltmeter should read between 0-5 or 0-10 Vdc depending on the model. For current output

models, insert a mA meter in series with the OUT terminal and it should read between 4 and 20 mA.

Figure 1

Figure 2

Voltage Connection with Controller 24 Vdc Power

Figure 3

+24 Vac/dc

Analog Input (0-5 Vdc)

Common

POWER

OUT

COMMON

Controller

2 wire probe

NEG

SEN

EXC

3 wire probe

NEG

SEN

EXC

Figure 4

0001228 Rev.2

NEG SEN EXC

POWER

OUT

COMMON

On-board sensor

for space only

Room Temperature Transmitter

TE500AS Series - Installation Instructions

Page 2

PRINTED IN CANADA

TYPICAL WIRE RESISTANCE VALUES

When using low resistance sensors (i.e. 100  RTD), long wire runs can add

signicant error to the readings. Use the following chart to determine errors

due to wire resistance or consider using 1000  sensor or a transmitter

for better accuracy. Locate the type of wire being used. Multiply the total

length of the wire (distance from the controller to the sensor and back) by

the number found in the following chart for total resistance.

SPECIFICATIONS

Power Supply..................15-35 Vdc or 12-26 Vac

Sensor Type .....................1000  platinum RTD

Operating Range ...........0 to 70°C (32 to 158°F), 5 to 95 %RH non-condensing

Output Signal..................4-20 mA or 0-5 Vdc or 0-10 Vdc

Output Drive ...................Current: >550 

Voltage: 5K  min

Wire Connections.......... Screw terminal block (14 to 22 AWG)

Enclosure..........................White ABS, IP20 (NEMA 1)

Dimensions......................70mm W x 114mm H x 30mm D (2.75" x 4.5" x 1.2")

Country of Origin........... Canada

GAGE WIRE TYPE 18 AWG 22 AWG 24 AWG

STRANDED OHMS/FOOT 5.85 m 14.75 m 23.29 m

SOLID OHMS/FOOT 6.4 m 15.85 m 25.72 m

CALIBRATION

The unit can be calibrated in the eld using precision resistance values equal to the zero and span of the temperature range. Simply replace the

attached probe with the resistor, then adjust the ZERO and SPAN pots accordingly to obtain the correct output signal. Repeat the adjustments until

both values are correct. For units with 3-wire sensors, remember to jumper the SEN and EXC terminals with a wire.

DIMENSIONS

70.6 mm

2.78"

115 mm

4.53"

4.3 mm

0.17"

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