Honeywell Touchpoint Plus User guide

Gas Detection

Touchpoint Plus

Safety Manual

Touchpoint Plus Safety Manual

1 Overview�� 3

2 Proof Test Interval�� 4

3 Safety Function�� 5

4 Proof Test Procedure�� 6

4.1 Relay output proof test procedure.........................................................................................................................................................6

4.1.1 Force relay .....................................................................................................................................................................................................................6

4.1.2 Relay conﬁguration...................................................................................................................................................................................................6

4.1.3 Zero gas and relay ......................................................................................................................................................................................................6

4.1.4 Span gas and relay.....................................................................................................................................................................................................6

4.2 mA output proof test procedure.................................................................................................................................................................6

4.2.1 Force mA ........................................................................................................................................................................................................................6

4.2.2 Zero gas and mA output..........................................................................................................................................................................................7

4.2.3 Span gas and mA output ........................................................................................................................................................................................7

4.2.4 Veriﬁcation of mA output conﬁguration ........................................................................................................................................................7

Contents

Touchpoint Plus Safety Manual

1 Overview

IEC 61508 is a generic functional safety standard. Functional safety is deﬁned in IEC 61508 as “part of the overall safety relating

to the equipment under control (EUC) and the EUC control system which depends on the correct functioning of the E/E/PES

(Electrical/Electronic/Programmable Electronic Systems) safety related to systems, other technology safety-related systems,

and external risk re-duction facilities.

The basic operation principle and product descriptions are explained in the user manual of Touch-point Plus. Please refer to

Honeywell Analytics website: http://www.honeywellanalytics.com/en-gb/products/TouchpointPlus where Touchpoint Plus user

manual (part number: 3011M5001) is avail-able.

Touchpoint Plus has various outputs but only below two output signals are under SIL2 scope:

• Relay output

• 420 mA current output

Touchpoint Plus is SIL2 approved by SGS TUV SAAR (Certiﬁcate number: FS/71/220/17/0178) with the following safety

parameters in accordance with the combination of input board type (mA input, mV input and Dual input) and output function

(420 mA and Relay), Touchpoint Plus’s detail PDF and PFH can be summarized as followings:

1) Touchpoint Basic Unit

Input Safety Function SFF PDFavg PFH

mA Input 420 mA > 90% 5.73 X 104 1.22 X 107

Relay > 90% 5.73 X 104 1.21 X 107

mV Input 420 mA > 90% 9.48 X 104 2.03 X 107

Relay > 90% 9.48 X 104 2.03 X 107

Dual Input 420 mA > 90% 7.98 X 104 1.70 X 107

Relay > 90% 7.98 X 104 1.69 X 107

2) Touchpoint Expansion Unit

Input Safety Function SFF PDFavg PFH

mA Input 420 mA > 90% 6.02 X 104 1.27 X 107

Relay > 90% 6.01 X 104 1.26 X 107

mV Input 420 mA > 90% 9.77 X 104 2.08 X 107

Relay > 90% 9.76 X 104 2.07 X 107

Dual Input 420 mA > 90% 8.27 X 104 1.74 X 107

Relay > 90% 8.26 X 104 1.73 X 107

where,

SFF: Safe Failure Fraction. A percentage of safe failures as compared to all failures

PFDavg: Average probability of failure to perform its design function on demand (1-year normalized value)

PFH: Probability of a dangerous failure per hour

Touchpoint Plus Safety Manual

2 Proof Test Interval

The purpose of a proof test is to return the unit to “as new” in terms of its safety parameters. The proof test interval is 1 year.

According to IEC 61508, users are allowed to extend the proof test inter-val to meet their system needs. Honeywell Analytics allows

such an extension, as long as the user follows the proper calculation method for calculating a proof test interval as deﬁned in IEC

61508 for the desired SIL level.

Note

The proof test interval should not preclude more frequent maintenance of Touchpoint Plus in ac-cordance with the Operating

Instruction (3011M5001) if the site conditions require it�

Touchpoint Plus Safety Manual

3 Safety Function

Touchpoint Plus has two kinds of safety function: 1) Relay output and 2) 420 mA current output. The safety function must operate

as intended for SIL2 and here is the brief summary of intended opera-tion of each safety function.

1) Relay output

Status Description Intended operation

System fault relay

Normal No fault in Touchpoint Plus and gas sensors connected

to Touchpoint Plus Energized

Fault

Any troubles happened by internal diagnostic function

in Touchpoint Plus and the trouble from gas sensors

connected to Touchpoint Plus

De-energized

Channel relay

Normal Channel relay is to monitor input gas sensor’s status. The

default channel relay setting is de-energized for normal

status. Customer has to conﬁgure channel relay setting

for input gas sensor’s fault, alarm, inhibit and warning

status

Energized or

De-energized

Fault

Alarm

Inhibit

Warning

2) 420 mA output

Status Description Intended operation*

Normal

The status of measuring the gas. 420mA analog current value has output by

measured gas value. The current output is a scaled 420mA output value where

4mA represents zero gas and 20mA represents full scale

4 – 20 mA

Inhibit

Warm-up, calibration and inhibit setting of Touchpoint Plus and gas sensor’s

inhibit situation. Gas measurement is stopped and 420mA output value is ﬁxed

to the 2 mA.

2 mA

Over-range The status that the measured gas value is over the over-range setting value.

420mA output value is ﬁxed to the 3 mA. 3 mA

Under-range The status that the measured gas value is under the under-range setting value.

420mA output value is ﬁxed to the 3 mA. 3 mA

Fault

The case that the trouble is happened by internal Diagnostic function and gas

sensor’s fault. The gas measurement is stopped and 420mA output value is

ﬁxed to 1 mA.

0 – 1 mA

* The mA value in the Intended operation is a default setting. It is highly recommend that user should NOT change the default setting

of mA value in each status

3 Safety Function

Touchpoint Plus Safety Manual

4 Proof Test Procedure

4.1 Relay output proof test procedure

4.1.1 Force relay

The relays in Touchpoint Plus can be tested by using the menu of “Force Relay”. “Force Relay” is to verify relay operation regardless

of relay setting and gas sensor input. This is to verify if relay is energized or de-energized correctly. Please refer to the section 9.2.2

of 3011M5001 to conduct “Force Relay”. If any relays do not work correctly in force relay, please contact Honeywell Analytics for

further services.

4.1.2 Relay configuration

Channel relays will operate per user’s conﬁguration. User is responsible for conﬁguring each channel relay’s operation (energize or

de-energize) in the event of alarm 1, alarm 2, alarm 3, fault, inhibit and warning. Please refer to the section 6.4.16 of 3011M5001

to verify relay conﬁguration. The user is responsible for relay conﬁguration. It is highly recommend that user should check the relay

operation as conﬁgured. This can be done by relay simulator, described in user manual section 9.3.

4.1.3 Zero gas and relay

1) Apply zero gas to the sensor

2) The relay operation should be as intended per user’s relay conﬁguration. If the relay operation is incorrect, refer to 6.15.2 (mV

input sensor) and 6.15.3 (mA input sensor) of 3011M5001 and complete a zero gas calibration procedure. Otherwise, please

contact Honeywell Analytics for further services.

4.1.4 Span gas and relay

1) Apply calibration gas to the sensor

2) The relay operation should be an intended per user’s realy conﬁguration. If the relay operation is incorrect, refer to 6.15.2 (mV

input sensor) and 6.15.3 (mA input sensor) of 3011M5001 and complete a span gas calibration procedure. Otherwise, please

contact Honeywell Analytics for further services

4.2 mA output proof test procedure

4.2.1 Force mA

Each mA output channel of Touchpoint Plus can be tested by forcing the mA output. “Force 420 mA” is to verify mA output where

user can select the mA value and measure the mA output from Touch-point Plus by using the multimeter. Please refer to the section

9.2.3 of 3011M5001 to conduct “Force 420 mA”.

Be sure that input channel and mA output channel conﬁguration is correct before checking Force mA. The tolerance for mA output

shall be +/- 0.1 mA. For example, mA output is set at 4 mA in “Force 420 mA”, then the actual measurement shall be ranged from

3.9 mA to 4.1 mA. Otherwise, please contact Honeywell Analytics for further services

Touchpoint Plus Safety Manual

4 Proof Test Procedure

4.2.2 Zero gas and mA output

1) Apply zero gas to the sensor

2) The current output should be 4.0 +/- 0.1 mA (default setting). If the mA output is not at the toler-ance when applying zero gas,

perform a zero gas calibration per 6.15.2 (mV input sensor) and 6.15.3 (mA input sensor) of 3011M5001. Otherwise, please

contact Honeywell Analytics for further services.

3) It should be careful when use with mA input sensor. mA input sensor may produce incorrect mA signal to Touchpoint Plus’s mA

channel. Please verify if mA input sensor generates the accurate mA signal to Touchpoint Plus. For example, user can connect mA

loop calibrator (accurate source of mA signal) to the mA channel of Touchpoint Plus. Then, user can verify if mA sensor generates

incorrect output or Touchpoint Plus’s mA channel produces incorrect mA output.

4.2.3 Span gas and mA output

1) Apply calibration gas to the sensor

2) The mA output measured is related to the percentage of gas applied. For example, As a default setting, 100 % of full gas

concentration is equivalent to 20.0 mA. If 75% of the full scale gas concentration is applied, the mA output should be 16.0 mA

per the default setting.The acceptable tolerance is +/- 0.1 mA. If the tolerance is out of +/- 0.1 mA, refer to 6.15.2 (mV input

sensor) and 6.15.3 (mA input sensor) of 3011M5001 and complete a span gas calibration procedure. Otherwise, please contact

Honeywell Analytics for further services

4.2.4 Verification of mA output configuration

mA output is conﬁgurable to each of Touchpoint Plus status (e.g. Normal, inhibit, over-range, under-range and fault). Users can

check if Touchpoint Plus’s mA output is identical to user’s mA conﬁgura-tion setting.

1) Normal and under/over range: Gas test using a zero and calibration gas – zero gas and calibration gas test shall show the mA

output per zero gas conﬁguration and calibration gas, respectively. This process shall be same as section 4.2.2 and 4.2.3 of this

manual but the target mA value shall be user’s conﬁguration value +/- 0.1 mA.

2) Inhibit and fault: When Touchpoint Plus is inhibit mode when menu mode is started. When Touch-point Plus stays in menu mode,

user can check if mA output is identical to inhibit setting value. mA output for fault status can be veriﬁed by simulating the fault

status, e.g. disconnect the sensor. The mA output at inhibit and fault status shall be the target value of conﬁguration value +/- 0.1

mA.

If any of the mA output at each status is out of tolerance, please check the mA output value conﬁgu-ration. Otherwise, please

contact Honeywell Analytics.

Issue 1_07/2017

H_MAN0XXX_EMEA

3011M5001 A0XXXX

Please Note:

While every effort has been made to ensure accuracy in this publication, no responsibility

can be accepted for errors or omissions. Data may change, as well as legislation, and you

are strongly advised to obtain copies of the most recently issued regulations, standards, and

guidelines. This publication is not intended to form the basis of a contract.

Find out more at www.honeywellanalytics.com

Contact Honeywell Analytics:

Europe, Middle East, Africa, India

Life Safety Distribution AG

Javastrasse 2

8604 Hegnau

Switzerland

Tel: +41 (0)44 943 4300

Fax: +41 (0)44 943 4398

gasdetection@honeywell.com

Customer Service

Tel: +800 333 222 44 (Freephone number)

Tel: +41 44 943 4380 (Alternative number)

Fax: +800 333 222 55

Middle East Tel: +971 4 450 5800 (Fixed Gas Detection)

Middle East Tel: +971 4 450 5852 (Portable Gas Detection)

India Tel: +91 124 4752700

Americas

Honeywell Analytics Inc.

405 Barclay Blvd.

Lincolnshire, IL 60069

USA

Tel: +1 847 955 8200

Toll free: +1 800 538 0363

Fax: +1 847 955 8210

detectgas@honeywell.com

www.honeywell.com

Asia Paciﬁc

Honeywell Analytics Asia Paciﬁc

#701 Sang Am IT Tower WorldCupbukRo 34Gil,

MapoGu Seoul 03922

Korea

Tel: +82 (0)2 6909 0300

Fax: +82 (0)2 2025 0328

analytics.ap@honeywell.com

Technical Services

EMEAI: HAexpert@honeywell.comUS

US: ha.us.service@honeywell.com

AP: ha.ap.service@honeywell.com

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