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Horner APG XLe OCS HEXE220C015 User Manual

Page 4

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MAN0810-10-EN

Specifications / Installation

__________________________________________________________________________________________________________________________________________________________________
12/18/2008

Page 4 of 4 ECN # 947


7

Digital Filtering for Analog Inputs


The digital filter is updated once per conversion. It is an “IIR” running average filter
that emulates a simple RC filter. The equivalent time constant is determined by the
Filter Constant and the sum of the conversion times for the two channels. The Filter
Constant determines the weight given to the most recent conversion. The following
table lists the equivalent time constant for the three possible total conversion times,
which are dependent upon the two input mode selections. This filter delay is in
addition to the PLC scan delay.






Equivalent RC Time Constant in Seconds

(Nominal time to reach 63% of final value.)

Total Conversion Time in Seconds

Filter Constant 0.03

0.09

0.13

0* 0.03*

0.09*

0.13*

1 0.07

0.18

0.27

2 0.13

0.35

0.53

3 0.27

0.71

1.07

4 0.53

1.41

2.13

5 1.07

2.83

4.27

6 2.14

5.65

8.54

7 4.28

11.30

17.08

* No filter delay, reading is unfiltered conversion value


8

Thermocouple Grounding Schemes


































Ungrounded Thermocouples

Alternate Shield Connection for

Ungrounded Thermocouples.

Ungrounded Thermocouples

Preferred Shield Connection for

Ungrounded Thermocouples.

Grounded Thermocouples

Field Ground Potential Less Than

Seven Volts AC

Typical Shield Connection for

Grounded Thermocouples

Grounded Thermocouples

Field Ground Potential Less Than Seven

Volts AC

Shields Connected at One End Only May

be Used to Reduce Noise

Grounded Thermocouples May Use the

Ungrounded Thermocouple Shield

Connections if the Shield is not Grounded

at the Field End

Note: The examples for thermocouple grounding schemes above are generic

illustrations. The XE105 has two thermocouple inputs.

Š All applicable codes and standards need to be followed in the installation of this

product.

Š Adhere to the following safety precautions whenever any type of connection is

made to the module:

ƒ Connect the safety (earth) ground on the power connector first before making any

other connections.

ƒ When connecting to electric circuits or pulse-initiating equipment, open their

related breakers.

ƒ Do not make connections to live power lines.
ƒ Make connections to the module first; then connect to the circuit to be monitored.
ƒ Route power wires in a safe manner in accordance with good practice and local

codes.

ƒ Wear proper personal protective equipment including safety glasses and insulated

gloves when making connections to power circuits.

ƒ Ensure hands, shoes, and floor are dry before making any connection to a power

line.

ƒ Make sure the unit is turned OFF before making connection to terminals.
ƒ Make sure all circuits are de-energized before making connections.
ƒ Before each use, inspect all cables for breaks or cracks in the insulation. Replace

immediately if defective.

• Use Copper Conductors in Field Wiring Only, 60/75° C

No part of this publication may be reproduced without the prior agreement and written
permission of Horner APG, Inc. Information in this document is subject to change
without notice.

9 Safety

When found on the product, the following symbols specify:

:Warning: Consult
user documentation.

Warning: Electrical
Shock Hazard.

This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or
Non-hazardous locations only

WARNING – EXPLOSION HAZARD
– Substitution of components may impair
suitability for Class I, Division 2
AVERTISSEMENT - RISQUE D'EXPLOSION - LA SUBSTITUTION DE
COMPOSANTS PEUT RENDRE CE MATERIAL INACCEPTABLE POUR LES
EMPLACEMENTS DE CLASSE 1, DIVISION 2


WARNING – EXPLOSION HAZARD
– Do not disconnect equipment unless power
has been switched off or the area is known to be non-hazardous.
AVERTISSEMENT - RISQUE D'EXPLOSION - AVANT DE DECONNECTOR
L'EQUIPMENT, COUPER LE COURANT OU S'ASSURER QUE L'EMPLACEMENT
EST DESIGNE NON DANGEREUX.


WARNING:
To avoid the risk of electric shock or burns, always connect the safety
(or earth) ground before making any other connections.

WARNING:
To reduce the risk of fire, electrical shock, or physical injury it is strongly
recommended to fuse the voltage measurement inputs. Be sure to locate fuses as
close to the source as possible.

WARNING:
Replace fuse with the same type and rating to provide protection against
risk of fire and shock hazards.

WARNING:
In the event of repeated failure, do not replace the fuse again as a
repeated failure indicates a defective condition that will not clear by replacing the
fuse.

WARNING:
Only qualified electrical personnel familiar with the construction and
operation of this equipment and the hazards involved should install, adjust, operate,
or service this equipment. Read and understand this manual and other applicable
manuals in their entirety before proceeding. Failure to observe this precaution could
result in severe bodily injury or loss of life.

This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions:

1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that

may cause undesired operation.

10

Technical Support

For assistance and manual updates, contact Technical Support at the following
locations:

North America:
(317) 916-4274
www.heapg.com
email:

[email protected]

Europe:
(+) 353-21-4321-266
www.horner-apg.com
email:

[email protected]

This manual is related to the following products: