S2Tech 699Plus - User Manual

699Plus – New Functions – FIRMWARE UPDATE
Troubleshooting function
s
S2Tech srl Via Imperia, 28 Milano – ITALY
Tel: +39 02 8910142 Fax: + 39 02 89124848
e-mail: info@s2tech.it
www.s2tech.it
Versione : UK 1r1 dated 13/04/21
Page: 1/2
Notice: The information in this manual is subject to change without notice.S2Tech shall not be liable for technical or editorial errors or omissions contained herein, nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material. This manual contains information protected by
copyright. No part of this manual may be photocopied, or reproduced in any form, or translated without prior written consent from S2Tech. Z:\Manuali\699Plus 2k17\699Plus Troubleshooting Functions Fw 1.41 UK 130421.docx
During system’s calibration it can happen that the lift
installer has unsatisfying calibration due to errors in
performing the calibration procedure or due to the
way lift has been installed or for wrong installation of
the measurement system (wrong placement of the
sensor with poor sensitivity to load variations, etc).
The above conditions can be detected as
measurements with poor repeatability or larger than
expected measurement errors, or errors indicated on
699Plus display.
Messages can be:
a) indications to the installer, that something is
not as ideal for the correct working of the
measurement system, without blocking the lift
b) error messages indicating that performed calibration cannot grant a conversion of the internal
measurement into trustable weight indication, blocking the measurement system
c) error messages indicating a calibration where the internal AD converter is not working, for the
expected measuring range on its working area
A) Calibration concepts:
• To calibrate 699, MANU procedure needs to acquire the coordinates of two points, to define the
conversion function between the measured signals (expressed in internal AD points) and the
reference load.
• TARE: empty cabin.
• HI: cabin loaded with a load as near as possible to the lift’s maximum capacity.
• After a calibration, at the reboot, calibration parameters are verified to check the correctness of
the conversion in the selected engineering units, signaling (with Error codes Er.XX) the
measurement conditions that may lead to non-consistent conversions.
• If 699 Plus indicates an Er condition, Tare and HI parameters can be substituted with a new set of
coordinates with a new calibration.
Some common calibration mistakes:
 942 Strain Link is installed on the neutral axis of a bending beam, having not enough signal
variation (as percentage) corresponding to load changes
 Structure is too stiff, or Strain link is not correctly fixed on the structure surface (screws not
tightened, paint / rust as interface on the mounting surface, elastic washers used instead of supplied
plain washers, etc.)
 MRL Multirope sensor is installed on the counterweight rope side and measurement is not in
position to represent - with enough percentage change - the changes of the applied load
 MRL Multirope sensor has been installed with screws not correctly touching the inside of the
deflection bar (see instruction manual)
 Electrical connections are not properly done, since no percentage changes are shown when load
changes.
 Car floor is installed on TSP sensors but touches other structures
 Excessive friction between the guides and the sliding guide shoes is indicated by a suddenly
increase of the value when car starts to move, that then stabilize at lower values.
 Problems of guide geometry can be associated to sudden changes in the displayed value, when car
is moving on the shaft
 Etc
In the event of an excessive load, which saturates the input of the instrument, Er.28 will appear on the
display.
B) To understand the situation, the following error messages indicates:
ER.01
Negative measurement. ER01 indication is displayed alternatively to the measured weight
(polarity is indicated only with 3 digits values, i.e. -999) – verify zeroing with C key,
electrical connection and system calibration.
Available from firmware version 1.37
ER.22
High load sensitivity. Verify that calibrated [C] screws correspond to rope’s diameter
and that no ropes overlap
HI(AD)-Tare(AD)/ HI(Kg)-TARE(Kg) > 500 bit/kg
Conversion slope not correct: Verify that HI value is entered with the right resolution (use
weight at least 80% FSCA).
ER.23
HI value is too low (in engineering units).
HI
-
Tare must be > 10
ER.24
Known load for calibration is too low. Increase load.
HI(AD)
-
Tare(AD) <100
ER.28
Overflow state detected for ADC (positive or negative) during normal measurement.
In case that AREL parameter (available on SERV menu, default = 0) is set to 1, this error
condition will activate relay
the greatest percentage,
blocking the lift
.
ER.30
Pushbutton detected as continuously pressed at the end of the calibration procedure (reboot)
ER.FF
ER.FF can be shown after calibration and reboot of the unit, if the calculated ADC points
corresponding to the greatest LEV percentage (Lev1, Lev2 or Lev3) multiplied by FSCA
value is greater than the working limits for the ADC.
ER.FE or ER.FD can be shown after calibration and reboot of the unit, if the calculated
ADC points corresponding to HI / Tare is greater / lower than the working limit for the
ADC.
In case that AREL parameter (available on SERV menu, default = 0) is set to 1, this error
condition will activate relay
the greatest percentage,
blocking the lift
.

Summary

Troubleshooting Calibration Issues

Calibration Concepts Explained

Explains the MANU procedure, TARE, and HI points for calibration.

Interpreting Calibration Error Codes

Details specific error codes (ER.01 to ER.FF) and their causes for calibration failures.

Advanced Troubleshooting Tools

DELTA View Functionality

Displays differences between HI and TARE calibration points in AD points.

PERCENTAGE View Mode

Shows live measurements as a percentage of stored reference calibration.

Resetting Unit Parameters

Procedure to reset working configuration parameters to default settings.

Documentation and Support

Manuals Download Information

Provides the link to download product instruction manuals.

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

The S2Tech 699Plus is a sophisticated weight controller designed for lift systems, offering precise load measurement and comprehensive troubleshooting capabilities. This device is crucial for ensuring the safe and efficient operation of lifts by accurately monitoring the weight within the cabin.

Function Description

The primary function of the 699Plus is to convert internal measurement signals into a reliable weight indication. It achieves this through a calibration process that establishes a conversion function between measured analog-to-digital (AD) points and a reference load. The device is designed to detect and signal various issues that may arise during installation or operation, ensuring the integrity of the weight measurement system.

The 699Plus features several error messages and troubleshooting functions that provide detailed feedback on the system's status. These messages can indicate problems ranging from incorrect sensor installation and electrical connections to structural issues affecting load measurement. For instance, "Er.01" signals a negative measurement, prompting a check of zeroing, electrical connections, and calibration. "Er.22" indicates high load sensitivity, suggesting a review of calibrated screws and rope diameter. "Er.23" and "Er.24" point to insufficient load values during calibration, requiring an increase in the calibration load. An "Er.28" indicates an overflow state in the ADC, which can lead to the lift being blocked if the AREL parameter is set to 1. "Er.30" signifies a continuously pressed pushbutton during calibration, while "Er.FF" indicates that calculated ADC points exceed working limits, potentially blocking the lift if AREL is set to 1.

Usage Features

The 699Plus offers a user-friendly interface with pushbuttons for navigation and configuration. Calibration is a key aspect of its usage, involving the acquisition of two points: TARE (empty cabin) and HI (cabin loaded near maximum capacity). The device then uses these points to define the conversion function.

For troubleshooting, the 699Plus includes a "DELTA view" that displays the difference between HI and TARE calibration points in internal AD units. This view helps assess the sensitivity of the measurement element, providing insights into potential issues with sensors, ropes, or the car frame. A "PERCENTAGE view" is also available, which displays live measurements as a percentage of a stored reference calibration. This feature is particularly useful for verifying if load changes correspond to appropriate percentage value changes, ensuring correct electrical connections and calibration.

Activating the troubleshooting functions involves pressing the 'E' pushbutton for at least 5 seconds until "tbls" appears, followed by a blinking comma. This activates the Percentage displaying view, which can be recalled during normal measurement or in case of an error. The internal AD points corresponding to the difference of HI-TARE can also be displayed.

The device also supports resetting working parameters to default settings. This is useful if configuration parameters become unpredictable. The reset procedure involves a specific sequence of pushbutton presses and entering a password supplied by S2Tech.

Maintenance Features

The 699Plus is designed with maintenance in mind, providing clear indications of potential issues that require attention. The error messages guide installers and technicians to specific problems, facilitating efficient troubleshooting. For example, if "Er.22" appears, it directs the user to verify the calibrated screws and rope diameter, which are critical for accurate load sensing. Similarly, "Er.23" and "Er.24" prompt an increase in the calibration load, indicating that the initial load was insufficient for proper calibration.

The "DELTA view" and "PERCENTAGE view" are invaluable maintenance tools. They allow technicians to quickly assess the health of the measurement system and identify any deviations from expected behavior. For instance, if the DELTA value is lower than typical, it might suggest a need to increase rope deflection, while a higher value might indicate the need to decrease deflection to avoid sensor overloading. The PERCENTAGE view helps confirm that electrical connections are sound and that the system is responding correctly to load changes.

In cases where the unit's behavior becomes unpredictable due to misconfigured parameters, the reset function provides a straightforward way to restore default settings, ensuring the device operates as intended. It is important to avoid power loss or pressing the reset pushbutton during this procedure to prevent further issues.

Instruction manuals for the 699Plus are readily available online, accessible via a datamatrix code found on the instruments, which can be scanned by mobile devices for direct access. This ensures that users always have access to the latest documentation for proper installation, operation, and maintenance.

S2Tech 699Plus Specifications