ComAp MainsPro Global Manual
MainsPro
Mains Decoupling Protection
SW version 1.6.1
1 Document information 6
2 Introduction of Installation and Operation Guide 9
3 Installation data 11
Relay
4 User interface 19
5 Introduction of Application Guide 28
6 Important Steps of MainsPro utilization 30
7 TRIP and Fault Reset 31
8 Protective features 33
9 Application tips 40
10 Introduction of Reference Guide 44
11 Technical data 45
12 Appendix 50
Copyright © 2019 ComAp a.s.
Written byPetra Piclová
Prague, Czech Republic
ComAp a.s., U Uranie 1612/14a,
170 00 Prague 7, Czech Republic
Tel: +420 246 012 111
E-mail: info@comap-control.com, www.comap-control.com
Global Guide
Table of contents
1 Document information 6
1.1 Clarification of notation 6
1.2 About this guide 6
1.2.1 Installation and Operation Guide 6
1.2.2 Application Guide 6
1.2.3 Reference Guide 6
1.3 Legal notice 6
1.4 Document history 8
2 Introduction of Installation and Operation Guide 9
2.1 Purpose of this manual 9
2.2 Confornity declaration 9
2.3 Warnings 10
2.3.1 Dangerous voltage 10
2.3.2 Adjust the setpoints 10
3 Installation data 11
3.1 Dimensions 11
3.2 List of terminals 12
3.3 MainsPro Frame 12
3.4 Wiring 12
3.4.1 “Star” connection 13
3.4.2 “Delta” connection 13
3.4.3 Connection with voltage transformers 14
3.4.4 Single-phase connection 14
3.4.5 Power supply 15
3.4.6 Relay outputs connection 16
3.4.7 Binary switches connection 16
3.5 Measurement range 16
3.6 Wiring examples 17
4 User interface 19
4.1 Front panel elements 19
4.1.1 Pushbuttons 20
4.1.2 Setpoints change 20
4.1.3 Reset operation time 21
4.1.4 Reset trip counters 21
4.1.5 TEST mode activation 21
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4.1.6 Factory default 22
4.2 Mechanical sealing 22
4.3 Signalization LEDs 22
4.4 Measurement screens 24
4.5 Alarm messages 26
5 Introduction of Application Guide 28
5.1 Purpose of this manual 28
5.2 MainsPro typical usage 28
5.3 Typical applications of MainsPro protection relay 28
6 Important Steps of MainsPro utilization 30
7 TRIP and Fault Reset 31
7.1 TRIP 31
7.1.1 TRIP event 31
7.1.2 TRIP status 31
7.2 Fault reset 32
8 Protective features 33
8.1 ANSI 59 Overvoltage, ANSI 27 Undervoltage 33
8.2 Floating 10 minutes average overvoltage 34
8.3 ANSI 81H Overfrequency, 81L Underfrequency 34
8.4 ANSI 47 Voltage unbalance and angle asymmetry 36
8.4.1 Voltage unbalance 36
8.4.2 Positive sequence undervoltage, Negative sequence overvoltage 36
8.5 ANSI 78 Vector shift 37
8.5.1 Measuring principle 38
8.6 81R Rate Of Change Of Frequency (ROCOF) 39
8.7 Phase rotation, incorrect phase polarity 39
9 Application tips 40
9.1 Automatic return to mains 40
9.2 Binary switches 40
9.2.1 External trip 41
9.2.2 Fault reset 41
9.2.3 Alternative settings 41
9.2.4 Disable 41
9.2.5 CB Feedback 41
9.3 Counters 41
9.4 Timer 42
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9.5 Start trip 42
9.6 TEST mode 42
10 Introduction of Reference Guide 44
10.1 Purpose of this manual 44
11 Technical data 45
11.1 Accuracies and reaction times 45
11.1.1 Operating area 45
11.1.2 Voltage measurement 46
11.1.3 Frequency measurement 46
11.1.4 Time delays accuracy 46
11.1.5 Loss of Mains reaction times 46
11.2 Technical parameters 46
11.2.1 Endurance to the power supply voltage fails 47
11.3 Factory default setting of MainsPro unit 47
12 Appendix 50
12.1 Library of Setpoints 51
12.1.1 Group: Basic 52
12.1.2 Group: V <>, A.V <> 55
12.1.3 Group: dU, A.dU 56
12.1.4 Group: f <>, A.f <> 57
12.1.5 Group: LOM, A.LOM 58
12.1.6 Group: f(BI) 59
12.1.7 Group: f(RE) 60
12.2 Library of Binary switches 61
12.2.1 Ext Trip 61
12.2.2 Fault Reset 61
12.2.3 Alt Settings 61
12.2.4 Disable 61
12.2.5 CB Feedback 61
12.3 Relay outputs 62
12.3.1 CommTrpPer 63
12.3.2 !CommTrpPer 63
12.3.3 CommTrpImp 63
12.3.4 !CommTrpImp 63
12.3.5 CommSigImp 63
12.3.6 !CommSigImp 64
12.3.7 CommSigDel 64
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12.3.8 !CommSigDel 64
12.3.9 U Sig 64
12.3.10 !U Sig 64
12.3.11 f Sig 65
12.3.12 !f Sig 65
12.3.13 LOM Sig 65
12.3.14 !LOM Sig 65
12.3.15 dU Sig 65
12.3.16 !dU Sig 66
12.3.17 Other Sig 66
12.3.18 !Other Sig 66
12.3.19 Alt Sig 66
12.3.20 TrpEndImp 66
12.3.21 !TrpEndImp 67
12.3.22 InternFail 67
12.3.23 !InternFail 67
12.3.24 BakTrpPer 67
12.3.25 !BakTrpPer 67
12.3.26 BakTrpImp 68
12.3.27 !BakTrpImp 68
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1 Document information
1.1 Clarification of notation 6
1.2 About this guide 6
1.3 Legal notice 6
1.4 Document history 8
1.1 Clarification of notation
Note: This type of paragraph calls readers attention to a notice or related theme.
IMPORTANT: This type of paragraph highlights a procedure, adjustment etc., which can cause a
damage or improper function of the equipment if not performed correctly and may not be clear at
first sight.
Example: This type of paragraph contains information that is used to illustrate how a specific function
works.
1.2 About this guide
1.2.1 Installation and Operation Guide
The Installation and Operation Guide serves for the personnel providing installation of the MainsPro unit. It
contains wiring and setting instructions needed for service and commissioning of the unit. It also contains
introduction of the user interface and necessary procedures for setting and operation of the unit. Though
MainsPro is very simple and intuitive for the operating personnel, we recommend keeping one copy of this
manual available permanently at the site where MainsPro unit is installed, to facilitate the necessary service
and operation tasks.
1.2.2 Application Guide
The Application Guide serves for the designers and engineers, who process the necessary documentation and
implementation procedures on the site, where MainsPro is installed. It contains detailed description of MainsPro
functionalities and their practical application.
1.2.3 Reference Guide
The Reference Guide contains library of setpoints, inputs and outputs functionalities and detailed technical
information. This information is referenced in the Installation and Operation Guide and Application Guide.
1.3 Legal notice
This End User's Guide/Manual as part of the Documentation is an inseparable part of ComAp’s Product and
may be used exclusively according to the conditions defined in the “END USER or Distributor LICENSE
AGREEMENT CONDITIONS – COMAP CONTROL SYSTEMS SOFTWARE” (License Agreement) and/or in
the “ComAp a.s. Global terms and conditions for sale of Products and provision of Services” (Terms) and/or in
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the “Standardní podmínky projektů komplexního řešení ke smlouvě o dílo, Standard Conditions for Supply of
Complete Solutions” (Conditions) as applicable.
ComAp’s License Agreement is governed by the Czech Civil Code 89/2012 Col., by the Authorship Act
121/2000 Col., by international treaties and by other relevant legal documents regulating protection of the
intellectual properties (TRIPS).
The End User and/or ComAp’s Distributor shall only be permitted to use this End User's Guide/Manual with
ComAp Control System Registered Products. The Documentation is not intended and applicable for any other
purpose.
Official version of the ComAp’s End User's Guide/Manual is the version published in English. ComAp reserves
the right to update this End User's Guide/Manual at any time. ComAp does not assume any responsibility for its
use outside of the scope of the Terms or the Conditions and the License Agreement.
Licensed End User is entitled to make only necessary number of copies of the End User's Guide/Manual. Any
translation of this End User's Guide/Manual without the prior written consent of ComAp is expressly prohibited!
Even if the prior written consent from ComAp is acquired, ComAp does not take any responsibility for the
content, trustworthiness and quality of any such translation. ComAp will deem a translation equal to this End
User's Guide/Manual only if it agrees to verify such translation. The terms and conditions of such verification
must be agreed in the written form and in advance.
For more details relating to the Ownership, Extent of Permitted Reproductions Term of Use of the
Documentation and to the Confidentiality rules please review and comply with the ComAp’s License
Agreement, Terms and Conditions available on www.comap-control.com.
Security Risk Disclaimer
Pay attention to the following recommendations and measures to increase the level of security of ComAp
products and services.
Please note that possible cyber-attacks cannot be fully avoided by the below mentioned recommendations and
set of measures already performed by ComAp, but by following them the cyber-attacks can be considerably
reduced and thereby to reduce the risk of damage. ComAp does not take any responsibility for the actions of
persons responsible for cyber-attacks, nor for any damage caused by the cyber-attack. However, ComAp is
prepared to provide technical support to resolve problems arising from such actions, including but not limited to
restoring settings prior to the cyber-attacks, backing up data, recommending other preventive measures against
any further attacks.
Warning: Some forms of technical support may be provided against payment. There is no legal or factual
entitlement for technical services provided in connection to resolving problems arising from cyber-attack or
other unauthorized accesses to ComAp's Products or Services.
General security recommendations and set of measures
1. AccessCode
• Change the AccessCode BEFORE the device is connected to a network.
• Use a secure AccessCode – ideally a random string of 8 characters containing lowercase, uppercase letters
and digits.
• For each device use a different AccessCode.
2. Password
• Change the password BEFORE the device enters a regular operation.
• Do not leave displays or PC tools unattended if an user, especially administrator, is logged in.
3. Controller Web interface
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• The controller web interface at port TCP/80 is based on http, not https, and thus it is intended to be used only
in closed private network infrastructures.
• Avoid exposing the port TCP/80 to the public Internet.
4. MODBUS/TCP
• The MODBUS/TCP protocol (port TCP/502) is an instrumentation protocol designed to exchange data
between locally connected devices like sensors, I/O modules, controllers etc. From it’s nature it does not
contain any kind of security – neither encryption nor authentication. Thus it is intended to be used only in closed
private network infrastructures.
• Avoid exposing the port TCP/502 to the public Internet.
5. SNMP
• The SNMP protocol (port UDP/161) version 1,2 is not encrypted. Thus it is intended to be used only in closed
private network infrastructures.
• Avoid exposing the port UDP/161 to the public Internet.
1.4 Document history
Revision number Related SW Date of issue Author
9 1.6.1 26.4.2019 Petra Piclová
8 1.6.0 13.3.2018 Petra Piclová
7 1.5.0 16.1.2015 Petra Piclová
6 1.4.1 15.11.2013 Petra Piclová
5 1.4.0 30.10.2013 Petra Piclová
4 1.3.0 30.8.2012 Tomáš Jelen
3 1.2.0 20.4.2012 Tomáš Jelen
2 1.1.0 2.11.2011 Tomáš Jelen
1 1.0.0 18.6.2010 Tomáš Jelen
6 back to Document information
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2 Introduction of Installation and Operation Guide
2.1 Purpose of this manual 9
2.2 Confornity declaration 9
2.3 Warnings 10
6 back to Table of contents
Congratulations to your purchase of ComAp MainsPro unit! MainsPro is a microprocessor-based protective
relay, providing a comprehensive set of protective and supplementary functionalities. The basic protective
functions are:
Voltage
Frequency
Loss of mains
This covers the basic requirements for mains-decoupling (inter-tie, „G59/2“) protection, but allows also usage in
many applications where benefits of the unit’s unique functionality is needed.
2.1 Purpose of this manual
The Installation and Operation Guide serves for the personnel, providing installation of the MainsPro unit. It
contains wiring and setting instructions, needed for service and commissioning of the unit. It also contains
introduction of the user interface and necessary procedures to perform setting and operating of the unit. Though
MainsPro is very simple and intuitive for the operating personnel, we recommend keeping one copy of this
manual available permanently at the installation site, where MainsPro unit is installed, to facilitate the
necessary service and operation tasks.
2.2 Confornity declaration
Following described machine complies with the appropriate basic safety and health requirement of
the EC Low Voltage Directive No: 73/23 / EEC and EC Electromagnetic Compatibility Directive
89/336 / EEC based on its design and type, as brought into circulation by us.
The unit is certified to comply to the appropriate requirements of the standard DIN V
VDE V 0126-1-1 (certificate ref. 44 207 11 398020, available upon request), with the
following conditions:
The conformity with the Standard DIN V VDE V 0126-1-1, chapter 4.1/ 6.1,
VDE O126-1-1
which is declared in the certificate 44 207 11 398020, requires the tolerance
against one fault. In order to fulfill this functional safety requirement, a
redundant architecture has to be built by the usage of two certified units.
CEI 0-21
Mains pro 1.6.1 Global Guide
It has to be ensured that each of both units is connected to an output (relay)
which is capable to induce opening of the operated contactor.
The unit is certified to comply with the requirements of the standard CEI 0-21. The
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product MainsPro CEI 0-21 is set by default to cover the functionalities and default
limits requested by this certification. In line with this certification, the output
!CommTrpPer, set by default on the RE1 output of the unit, is to be used for opening
the circuit breaker in the connection point between generator and the mains.
2.3 Warnings
IMPORTANT: Be aware that the relay outputs can change state during and after the unit setting
(before the unit is used again ensure that the proper setting is done)!!!
IMPORTANT: Be aware that the devices connected to binary outputs of the unit may operate upon
disconnection of power supply, measurement inputs and/or binary inputs!!!
2.3.1 Dangerous voltage
In no case touch the terminals for voltage and current measurement!
Always connect grounding terminals!
In any case do not disconnect controller CT terminals!
2.3.2 Adjust the setpoints
All parameters are adjusted to their typical values. However the setpoints has to be checked and adjusted to
their real values before the first starting of the gen-set.
The following instructions are for qualified personnel only. To avoid personal injury do not perform any action not
specified in related guides for product.
Note: ComAp believes that all information provided herein is correct and reliable and reserves the right to
update at any time. ComAp does not assume any responsibility for its use unless otherwise expressly
undertaken.
6 back to Introduction of Installation and Operation Guide
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3 Installation data
3.1 Dimensions 11
3.2 List of terminals 12
3.3 MainsPro Frame 12
3.4 Wiring 12
3.5 Measurement range 16
3.6 Wiring examples 17
6 back to Table of contents
3.1 Dimensions
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3.2 List of terminals
BIC Binary inputs – COM terminal
BI1 – BI4 Configurable binary inputs
UA1 to 3
UB1 to 3
UC1 to 3
11, 21, 31, 41, 51 RE1-5 relay contact – common
12, 22, 32, 42, 52
14, 24, 34, 44, 54
L/+ Power supply – high range 85-265 VAC / 110 – 370 VDC
+ Power supply – low range 8 – 40 VDC. Connect “+” pole to this terminal
N/-
First set of voltage measurement terminals (UA).
Terminals UA1 and UA2 are internally interconnected
Second set of voltage measurement terminals (UB).
Terminals UB1 and UB2 are internally interconnected
Third set of voltage measurement terminals (UC).
Terminals UC1 and UC2 are internally interconnected
RE1-5 relay contact – normally closed
(during fault-free conditions maintained in open position)
RE1-5 relay contact – normally open
(during fault-free conditions maintained in closed position)
Common terminal for power supply.
In case of DC supply, connect “–“ pole to this terminal
3.3 MainsPro Frame
MainsPro Frame is a MainsPro accessory product, allowing door-mounting of the unit, direct access to the
keyboard and the screen without opening the switchboard, and additional shielding (IP 55) for the front panel.
The frame size is 230x180x34 mm.
3.4 Wiring
3.4.1 “Star” connection 13
3.4.2 “Delta” connection 13
3.4.3 Connection with voltage transformers 14
3.4.4 Single-phase connection 14
3.4.5 Power supply 15
3.4.6 Relay outputs connection 16
3.4.7 Binary switches connection 16
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3.4.1 “Star” connection
If used for rated voltage 230 VAC ph-ground, set the setpoint Uin (page 52) to 230 V, for systems with rated
voltage 120VAC ph-ground, set the setpoint Uin (page 52) is to 120V. No additional setting is necessary for
indication of “Star” connection - MainsPro provides automatic detection of phase-ground voltage measurement.
MainsPro provides over-range to 130% of the rated voltage, i.e. 300 VAC for 230 V system and 156 V for 120 V
system with no change of measurement accuracy.
3.4.2 “Delta” connection
In this arrangement, MainsPro is rated for 400 VAC ph-ph with over-range to 130% = 520 VAC with no change of
measurement accuracy. Setpoint Uin (page 52) is to be set to 400 V, no additional setting is necessary for
indication of “Delta” connection. MainsPro provides automatic detection of phase-phase voltage measurement.
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3.4.3 Connection with voltage transformers
MainsPro allows connecting HV or other measurement transformers with secondary rated voltage 100V.
Provide the "Star" or "Delta" arrangement on the primary windings of the transformers and connect the
secondary 100 V to the MainsPro measurement inputs. Setpoint Uin (page 52) is to be set to 120V. This setting
provides the guaranteed measurement accuracy for the 100V inputs with overrange to 120V * 130% = 156 VAC.
Note: It is recommended to use “Delta” arrangement on the HV side to avoid nuisance tripping caused by phase
voltage unbalance.
3.4.4 Single-phase connection
MainsPro provides support for single-phase applications. Use the UA terminals to connect the measured
voltage to the unit and set the setpoint System (page 52) to 1ph. Use the same setting of rated voltage
selection as mentioned above.
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3.4.5 Power supply
MainsPro provides set of 3 terminals for the purpose of dual power supply range:
8 - 40 VDC: use the terminals + and N/-
85 - 265 VAC / 110-370 VDC: use the terminals L/+and N/-
For proper connection of the power supply, see also the printed sign on the MainsPro unit:
Requirements for power supply connections
The unit is suitable for permanent connection to the power supply. The power supply circuits must have
sufficient current withstand, corresponding to the appropriate power supply range and comply with the
standards relevant for the installation.
Note: External power supply is recommended in order to avoid excess of allowed supply voltage (256Vrms,
respectively 370V of peak value including dc offset).
Please be aware that not all power meters can detect the supply voltage including the dc component!
Note: The difference between power supply voltage and measured voltage must not exceed 1kV (peak-to-
peak), otherwise external power supply with appropriate voltage withstand is recommended to use. For
isolated, ungrounded systems external, galvanically isolated power supply is recommended in all cases.
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Requirements for power supply disconnecting device:
In case of power supply from AC voltage, the unit must be equipped by circuit breaker or contactor, marked as
disconnecting device in accordance with the EN 61010-1 standard.
Note: The power supply circuit 8-40 VDC is internally interconnected with the supply circuit 85-265 VAC. In
case of operation with both power supply terminals connected, keep in mind, that a failure of insulation in the
AC power supply may cause propagation of AC voltage into the circuits of low safe DC voltage, due to galvanic
interconnection of both circuits!
3.4.6 Relay outputs connection
For safety purposes, it is recommended to set all MainsPro relay outputs to inverse logic for failure trips and
signaling. This means that under fault-free conditions all contacts are kept in energized position. In trip or out-of-
range signaling state, the contacts de-energize. In case of power-supply fail, the unit automatically moves to
fault-signaling by de-energizing the output relays, assuring safety disconnection of the controlled devices.
These outputs are marked with exclamation mark (i.e.!CommTrpPer).
However, the outputs can be set to normal logic which means, that in fault-free state all contacts are kept in de-
energized position. In trip or out-of-range signaling state, the contacts energize. These outputs are without
exclamation mark (i.e.CommTrpPer).
Relay outputs in MainsPro are freely assignable by the setpoints f(RE).
In default configuration, RE1 serves as the permanently energized common trip output contact
(!CommTrpPer (page 63)). Use this contact to operate the connector devices with permanently energized
inputs.
In default configuration, RE2 serves as an impulse common trip contact (CommTrpImp (page 63)). Use
this contact to operate e.g. opening or UV coil of circuit breakers.
Remaining 3 relay outputs serve for signaling of any sensed failure.
The arrangement of RE1 to 4 outputs in default configuration corresponds to the functionality of the previous
NPU-FUV unit outputs.
3.4.7 Binary switches connection
MainsPro provides 4 galvanically isolated binary switches with configurable functionality. These inputs allow
connection of any voltage free contact between the common terminal BIC and the appropriate functional contact
(BI2 – BI4).
Particular functions (External Trip, Fault Reset, Alternative settings, Disable, CB Feedback) are freely
assignable by setpoint in Group: f(BI) (page 59).
For full description see Library of Binary switches on page 61.
3.5 Measurement range
MainsPro allows using multiple voltage ranges on the measurement inputs with unchanged measurement
accuracy. The following ranges are applicable:
230 V - this range applies in case of "star" connection of the 3-phase system using nominal 230V phase to
neutral. It may be also used for single-phase applications 230V phase to neutral. Overshoot by 30% up to
290V is possible for this measurement range. For this case, set the setpoint Uin (page 52) to 230/400V.
MainsPro will adjust automatically the measurement method, to assure the defined accuracy for the
measured voltage 230 V.
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400 V - this range applies in case of "delta" connection of the 3-phase system using nominal 400V phase to
phase. Overshoot by 30% up to 520V is possible for this measurement range. For this case, set the setpoint
Uin (page 52) to 230/400V. MainsPro will adjust automatically the measurement method, to assure the
defined accuracy for the measured voltage 400 V.
120 V - this range is applicable in countries using 120 V nominal voltage phase to neutral. Another
application is for the high-voltage and other applications, using voltage transformers from rated voltage to
100 V. The guaranteed accuracy applies to both ranges 100 and 120 V. Overshoot by 30% up to 156V is
possible for this measurement range. For this case, set the setpoint Uin (page 52) to 120V.
3.6 Wiring examples
This chapter provides examples of possible wiring of MainsPro which can be used as a preparation concept of
wiring scheme.
Note: ComAp bears no responsibility of functionality of the solution where these concepts are applied.
1. Under normal conditions the undervoltage coil is powered. In case of fault, the voltage is lost and the breaker
undervoltage coil opens.
2. Under normal conditions the Off coil is not powered and contacts are open. In case of failure, the contacts
(12) close and the voltage is applied on the Off coil, therefore auxiliary power supply (e.g.UPS) is necessary
to provide voltage for the Off coil.
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3. Under normal conditions the contacts are closed, in case of failure the contacts open. This wiring is typically
used for coil driven contactors.
6 back to Installation data
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4 User interface
4.1 Front panel elements 19
4.2 Mechanical sealing 22
4.3 Signalization LEDs 22
4.4 Measurement screens 24
4.5 Alarm messages 26
6 back to Table of contents
4.1 Front panel elements
Number Description
4 x 20 Alpha-numerical display
Mechanical sealing indication
Frequency measurement
3-phase voltage measurement
Last trip indication
Last trip timer
Control and navigation pushbuttons
Fault Reset button
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Number Description
TRIP LED
Singalization LEDs
Mechanical seal
4.1.1 Pushbuttons
In the measurement screens, use the ↑ and ↓ arrow buttons to browse through the measured values as
displayed on the 4x20 alphanumerical display. See the chapter Measurement screens (page 24) to get the
basic orientation.
To enter the setpoints menu, push the → button. For setpoints change, see Setpoints change on page 20.
To enter the init screen, to reset operation time, perform factory default reset, reset statistics or enter the
Test mode, push the ENTER and ESC at the same time. Together with the init screen display, the unit
performs lamp test by simultaneous cycling of all LEDs through all indication colors.
For confirmation of any value change or query, use the ENTERbutton.
For leaving any value change or query screen without change, use ESC button.
From any screen, press and hold the ESC button for 2 seconds to return back to the main measurement
screen (homepage).
4.1.2 Setpoints change
1. Push the → button to open the setpoints menu.
2. By buttons ↑ and ↓ browse through the menu. The setpoint groups are displayed in the cycling order, i.e.
from the last setpoint group by button ↓, the cursor moves to the first group and vice versa.
3. By button → or ENTER, enter the setpoint group, by button ←, move one level up in the setpoint tree. The
setpoints are displayed in the cycling order, i.e. from the last setpoint by button ↓, the cursor moves to the
first one and vice versa.
4. If standing on a setpoint, the setpoint change screen opens by pressing ENTER or →. In the screen, see the
setpoint limits at the lowest row of the screen.
5. The change is done by orders, starting from the least important digit. Use the buttons ← and → to move
between the digits. Use the buttons ↑ and ↓ to edit the digit. Please note, that the value is not limited by the
parameters limits during editing, but if an out-of-limits value is set-up, it will not be allowed to store in the unit
memory (the change may not be confirmed).
6. After the setpoint change is done, press ENTER to confirm the set value, or ESC to leave the setpoint
change screen without saving the changes.
Note: The unit allows mechanical sealing of the setpoints by the black switch in left-bottom corner of the unit. If
locked, the icon of closed padlock will appear on the position of setpoint change and the setpoints may not be
changed. Also, the padlock icon will be seen on the “homepage” measurement screen. Once the setpoint
change screen is entered and afterwards the sealing position is changed, the padlock indication is not changed,
but the internal lock is applied immediately.
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4.1.3 Reset operation time
1. Enter the init screen, by pushing the ENTER and ESC at the same time.
2. Press ← to enter the Reset Oper.Time? screen:
3. Using ← and → do your selection. By selecting YES, “Operation Time" timer will be reset, and the last five
events will be deleted. Press ENTER to confirm your selection.
4. By selecting NO and pressing ESC or by pressing ESC, return to the measurement screens with no change.
4.1.4 Reset trip counters
1. Enter the init screen, by pushing the ENTER and ESC at the same time.
2. Press ← to enter the Clear Statistics dialog screen:
3. Using ← and → do your selection. By selecting YES, all trip counters will be reset. Press ENTER to confirm
your selection.
4. By selecting NO and pressing ENTER or by pressing ESC, return to the measurement screens with no
change.
4.1.5 TEST mode activation
1. Enter the init screen, by pushing the ENTER and ESC at the same time.
2. Press ← and → to enter the Test mode activation screen:
3. Using ← and → do your selection. By selecting YES, you will activate the TEST mode - see the chapter
TEST mode (page 42) in Application Guide. Press ENTER to confirm your selection.
4. By selecting NO and pressing ENTER or by pressing ESC, return to the measurement screens with no
change.
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