Bender isoPV1685 User manual

Manual
EN
Insulation monitoring device
with residual current monitoring (isoPV1685PFR only)
for unearthed DC systems
for photovoltaic systems up to 1500 V
isoPV1685: software version D409 v2.0x
isoPV1685P : software version D525 v2.0x
isoPV1685PFR: software version D366 v1.0x
isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
isoPV1685
isoPV1685P
isoPV1685PFR

Bender GmbH & Co. KG
P.O.Box 1161 • 35301 Grünberg • Germany
Londorfer Straße 65 • 35305 Grünberg • Germany
Tel.: [phone] • Fax: [phone]
E-mail: [email protected] • www.bender.de
© Bender GmbH & Co. KG
All rights reserved.
Reprinting only with permission
of the publisher.
Subject to change!
Photos: Bender archives and bendersystembau archives.

3
Table of Contents
isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
1. Important information ........................................................................................... 7
1.1 Technical support .................................................................................................................... 8
1.1.1 First level support .................................................................................................................... 8
1.1.2 Repair service ............................................................................................................................ 8
1.1.3 Field service ................................................................................................................................ 8
1.2 Training courses ....................................................................................................................... 9
1.3 Delivery conditions ................................................................................................................. 9
1.4 Storage ......................................................................................................................................... 9
1.5 Disposal ....................................................................................................................................... 9
2. Safety instructions ............................................................................................... 11
2.1 General safety instructions ................................................................................................ 11
2.2 Work activities on electrical installations ..................................................................... 11
2.3 Device-specific safety instructions ................................................................................. 12
2.4 Address setting and termination .................................................................................... 13
2.5 Intended use ........................................................................................................................... 13
3. Function ................................................................................................................. 15
3.1 Device features isoPV1685, isoPV1685P and isoPV1685PFR ................................. 15
3.2 Product description .............................................................................................................. 15
3.3 Description of function ....................................................................................................... 16
3.3.1 Insulation monitoring ......................................................................................................... 17
3.3.2 Insulation fault location (isoPV1685P(FR)) ................................................................... 17
3.3.3 Residual current monitoring (isoPV1685PFR) ............................................................. 18
3.3.4 Self test ..................................................................................................................................... 18
3.3.4.1 Self test after connection to the supply voltage ................................................. 18
3.3.4.2 Automatic self test ......................................................................................................... 18
3.3.4.3 Manual self test ............................................................................................................... 19
3.3.5 Assignment of the alarm relays K1, K2, K3 ................................................................... 19
3.3.6 Standby mode ........................................................................................................................ 19
3.3.7 Measured value transmission to the control inputs of the inverter ................... 20
3.3.8 History memory ..................................................................................................................... 20

Table of Contents
4isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
4. Device overview ................................................................................................... 21
4.1 Dimensions .............................................................................................................................. 21
4.2 Connection ............................................................................................................................... 22
4.3 Display and operating controls ........................................................................................ 23
4.3.1 Operating controls ................................................................................................................ 23
4.3.2 Access to the DIP switch and µSD card via the service cover ................................ 23
4.3.3 Alarm LEDs on the top of the enclosure ........................................................................ 24
5. Installation, connection and commissioning of the device ......................... 25
5.1 Mounting .................................................................................................................................. 25
5.2 Connection ............................................................................................................................... 25
5.2.1 Connection requirements .................................................................................................. 25
5.2.2 Wiring diagram ....................................................................................................................... 26
5.3 Commissioning ....................................................................................................................... 28
5.3.1 Commissioning flow chart insulation fault monitoring .......................................... 28
5.3.2 Commissioning flow chart insulation fault location (isoPV1685P(FR) only) .... 29
6. BMS and CAN bus ................................................................................................. 31
6.1 BMS bus ..................................................................................................................................... 31
6.1.1 RS-485 interface with BMS protocol ............................................................................... 31
6.1.2 Topology RS-485 network .................................................................................................. 32
6.1.3 BMS protocol ........................................................................................................................... 32
6.1.4 Commissioning of an RS-485 network with BMS protocol ..................................... 33
6.1.5 Setting the BMS address ..................................................................................................... 34
6.1.6 Alarm and operating messages via the BMS bus ....................................................... 34
6.1.6.1 Alarm messages .............................................................................................................. 35
6.1.6.2 Operating messages ...................................................................................................... 35
6.1.7 Resetting error messages ...................................................................................................36
6.1.8 Starting the firmware update via the BMS bus ........................................................... 36
6.2 CAN bus ..................................................................................................................................... 36
6.3 Error codes BMS and CAN bus .......................................................................................... 37
7. Settings .................................................................................................................. 39
7.1 Setting the permissible system leakage capacitance or measurement speed . 39
7.2 Parameter setting with the tool iso1685-Set ............................................................... 39
7.3 Factory settings ...................................................................................................................... 40

Table of Contents
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isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
8. Technical data ....................................................................................................... 41
8.1 isoPV1685... data in tabular form .................................................................................... 41
8.2 Standards, approvals and certifications ........................................................................ 44
8.3 Ordering data ......................................................................................................................... 44
8.4 Characteristic curves ............................................................................................................ 45
8.4.1 The measurable leakage capacitance depends on the insulation resistance 45
8.4.2 Response time for insulation measurement ............................................................... 45
8.4.3 Response time for residual current measurement(isoPV1685PFR only) .......... 47
8.4.4 Example of alarms stored in the history memory ..................................................... 48
INDEX ...........................................................................................................................49

6

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isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
1. Important information
Always keep this manual within easy reach for future reference.
To make it easier for you to understand and revisit certain sections in this manual, we have used sym-
bols to identify important instructions and information. The meaning of these symbols is explained
below:
This operating manual describes the isoPV1685 series consisting of isoPV1685 and isoPV1685PFR.
This manual is intended for qualified personnel working in electrical engineering
and electronics!
The signal word indicates that there is a high risk danger that will result in elec-
trocution or serious injury if not avoided.
This signal word means that there is a medium risk of danger that can lead to
death or serious injury, if not avoided.
This signal word indicates a low level risk that can result in minor or moderate
injury or damage to property if not avoided.
This symbol denotes information intended to assist the user
to make optimum use of the product.
DANGER
WARNING
CAUTION

Important information
8isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
1.1 Technical support
For commissioning and troubleshooting Bender offers you:
1.1.1 First level support
Technical support by phone or e-mail for all Bender products
•Questions concerning specific customer applications
•Commissioning
•Troubleshooting
Telephone: [phone]*
Fax: [phone]
In Germany only: 0700BenderHelp (Tel. and Fax)
E-mail: [email protected]
1.1.2 Repair service
Repair, calibration, update and replacement service for Bender products
•Repairing, calibrating, testing and analysing Bender products
•Hardware and software update for Bender devices
•Delivery of replacement devices in the event of faulty or incorrectly delivered Bender devices
•Extended guarantee for Bender devices, which includes an in-house repair service or replace-
ment devices at no extra cost
Telephone: [phone]** (technical issues)
[phone]**, -785** (sales)
Fax: [phone]
E-mail: [e-mail]
Please send the devices for repair to the following address:
Bender GmbH, Repair-Service,
Londorfer Strasse 65,
35305 Grünberg
1.1.3 Field service
On-site service for all Bender products
•Commissioning, parameter setting, maintenance, troubleshooting for Bender products
•Analysis of the electrical installation in the building (power quality test, EMC test,
thermography)
•Training courses for customers
Telephone: [phone]**, -762 **(technical issues)
[phone]** (sales)
Fax: [phone]
E-mail: [e-mail]
Internet: www.bender-de.com
*Available from 7.00 a.m. to 8.00 p.m. 365 days a year (CET/UTC+1)
**Mo-Thu 7.00 a.m. - 8.00 p.m., Fr 7.00 a.m. - 13.00 p.m.

Important information
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isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
1.2 Training courses
Bender is happy to provide training regarding the use of test equipment.
The dates of training courses and workshops can be found on the Internet at www.bender-de.com -
> Know-how -> Seminars.
1.3 Delivery conditions
Bender sale and delivery conditions apply.
For software products the "Softwareklausel zur Überlassung von Standard-Software als Teil von
Lieferungen, Ergänzung und Änderung der Allgemeinen Lieferbedingungen für Erzeugnisse und
Leistungen der Elektroindustrie" (software clause in respect of the licensing of standard software as
part of deliveries, modifications and changes to general delivery conditions for products and servic-
es in the electrical industry) set out by the ZVEI (Zentralverband Elektrotechnik- und Elektronikindus-
trie e. V.) (German Electrical and Electronic Manufacturer's Association) also applies.
Sale and delivery conditions can be obtained from Bender in printed or electronic format.
1.4 Storage
The devices must only be stored in areas where they are protected from dust, damp, and spray and
dripping water, and in which the specified storage temperatures can be ensured.
1.5 Disposal
Abide by the national regulations and laws governing the disposal of this device. Ask your supplier
if you are not sure how to dispose of the old equipment.
The directive on waste electrical and electronic equipment (WEEE directive) and the directive on the
restriction of certain hazardous substances in electrical and electronic equipment (RoHS directive)
apply in the European Community. In Germany, these policies are implemented through the "Elec-
trical and Electronic Equipment Act" (ElektroG). According to this, the following applies:
•Electrical and electronic equipment are not part of household waste.
•Batteries and accumulators are not part of household waste and must be disposed of in accord-
ance with the regulations.
•Old electrical and electronic equipment from users other than private households which was
introduced to the market after 13 August 2005 must be taken back by the manufacturer and
disposed of properly.
For more information on the disposal of Bender devices, refer to our homepage at
www.bender-de.com -> Service & support.

Important information
10 isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016

11
isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
2. Safety instructions
2.1 General safety instructions
Part of the device documentation in addition to this manual is the enclosed "Safety instructions for
Bender products".
2.2 Work activities on electrical installations
If the device is being used in a location outside the Federal Republic of Germany, the applicable local
standards and regulations must be complied with. European standard EN 50110 can be used as a
guide.
Only qualified personnel are permitted to carry out the work necessary to
install, commission and run a device or system.
Risk of electrocution due to electric shock!
Touching live parts of the system carries the risk of:
• An electric shock
• Damage to the electrical installation
• Destruction of the device
Before installing and connecting the device, make sure that the installa-
tion has been de-energised. Observe the rules for working on electrical installa-
tions.
DANGER

Safety instructions
12 isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
2.3 Device-specific safety instructions
Danger due to excessive locating current or locating voltage!
If the locating current of the locating current injector is too high, sensitive loads
(e.g. in control circuits) may be damaged or switching operations may be acti-
vated unintentionally. Select a low locating current for these systems. In cases of
doubt, please contact our Service Department (see page 48).
Risk of electric shock!
When opening the device, you may come into contact with live parts. Switch off
the mains voltage before opening the device!
Make sure that the basic settings meet the requirements of the IT system. Persons
without the required expertise, in particular children, must not have access to or
contact with the ISOMETER®.
Danger of electric shock!
When opening the device there is the danger of touching live parts.
Switch off the mains voltage before opening the device!
In the event of an alarm message of the ISOMETER®, the insulation fault should
be eliminated as quickly as possible.
If the ISOMETER® is installed inside a control cabinet, the insulation fault mes-
sage must be audible and/or visible to attract attention.
When using ISOMETER®s in IT systems, make sure that only one active
ISOMETER® is connected in each interconnected system. If IT systems are inter-
connected via coupling switches, make sure that ISOMETER®s not currently used
are disconnected from the IT system and deactivated. IT systems coupled via di-
odes or capacitances may also influence the insulation monitoring process so
that a central control of the different ISOMETER®s is required.
Prevent measurement errors!
When a monitored IT system contains galvanically coupled DC circuits, an insu-
lation fault can only be detected correctly if the rectifier valves (e.g. rectifier di-
ode, thyristors, IGBTs, frequency inverters, …) carry a minimum current of
>10mA.
DANGER
DANGER
WARNING
CAUTION

Safety instructions
13
isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
2.4 Address setting and termination
Correct address setting and termination of the isoPV1685... series insulation monitoring device is
essential for correct functioning.
Ensure correct address setting and termination of the device!
2.5 Intended use
The device is used for insulation and residual current monitoring (isoPV1685PFR only) of large pho-
tovoltaic systems up to 1500 V designed as IT systems. The measurement method specially devel-
oped for slow voltage fluctuations (MPP-Tracking) monitors the insulation resistance even in
systems equipped with large solar generator panels where extremely high system leakage capaci-
tances against earth exist due to interference suppression methods. Adaptation to system-related
high leakage capacitances also occurs automatically.
The device generates locating current pulses required for insulation fault location. That allows the
localisation of the insulation fault using permanently installed or mobile insulation fault locators
(isoPV1685P(FR) only).
Integrated residual current monitoring allows fast signalling of a measured insulation faults on the
AC side (inverter, transformer) (isoPV1685PFR only).
Intended use also implies:
•The observation of all information in the operating manual
•Compliance with test intervals
In order to meet the requirements of applicable standards, the equipment must be adjusted to local
equipment and operating conditions by means of customised parameter settings. Please heed the
limits of the range of application indicated in the technical data.
Any other use than that described in this manual is regarded as improper.
Unspecified frequency range
When connecting to an IT system with frequency components below the speci-
fied frequency range, the response times and response values may differ from
the indicated technical data. However, depending on the application and the se-
lected measurement method, continuous insulation monitoring is also possible
in this frequency range.
There is no influence on the insulation monitoring for IT systems with frequency
components above the specified frequency range, e.g. within the range of typical
switching frequencies of frequency inverters (2…20 kHz).
Risk of bus errors!
Double assignment of addresses on the respective BMS or CAN busses can cause
serious malfunctions.
Only qualified personnel are permitted to carry out the work necessary to
install, commission and run a device or system.
CAUTION

Safety instructions
14 isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016

15
isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
3. Function
3.1 Device features isoPV1685, isoPV1685P and isoPV1685PFR
Only device version isoPV1685PFR provides a locating current injector and residual current measure-
ment! The device version isoPV1685PFR additionally ist able to perform a differential method.
•Insulation monitoring of large-scale photovoltaic systems
•Measurement of low-resistance insulation faults
•Separately adjustable response values Ran1 (Alarm 1) and Ran2 (Alarm 2) (both 200 …1 M) for
prewarning and alarm
•Automatic adaptation to high system leakage capacitances up to 2000 µF, selectable range
•Connection monitoring of L+, L- for reverse polarity
•Integrated locating current injector up to 50 mA (isoPV1685P(FR) only)
•Fast detection of insulation faults on the AC side by residual current monitoring
(inverter, transformer) allowing fast disconnection
(isoPV1685PFR only)
•Residual current response values IΔnfor prewarning and alarm (1…5 A)
(isoPV1685PFR only)
•CT connection monitoring
(isoPV1685PFR only)
•Device self test with automatic fault message in the event of a fault
•Alarm relays separately adjustable for insulation faults, residual current faults and device errors
(isoPV1685PFR only);
•Alarm relays separately adjustable for insulation fault 1, insulation fault 2
(isoPV1685(P) only)
•CAN interface to output measured values, statuses and alarms
•RS-485 interface (BMS bus), e.g. to control insulation fault location
•µSD card with data logger and history memory for alarms
(isoPV1685P(FR) only)
3.2 Product description
The ISOMETER® is an insulation monitoring device for IT systems in accordance with IEC 61557-8 and
IEC 61557-9. It is applicable for use in photovoltaic systems.
The following texts always describe device version isoPV1685PFR which provides
more device features, the device version which includes a locating current injec-
tor and residual current measurement.

Function
16 isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
3.3 Description of function
Insulation monitoring is carried out using an active measuring pulse which is superimposed onto the
PV system to earth via the integrated coupling.
isoPV1685:
When the insulation resistance between the IT system and earth falls below the pre-set prewarning
response value Ran1, LED "Alarm 1" lights and the alarm relay K1 switches. When the value also falls
below response value Ran2, LED "Alarm 2" lights too and the alarm relay K2 switches.
isoPV1685P:
When the insulation resistance between the IT system and earth falls below the pre-set prewarning
response value Ran1, LED "Alarm 1" lights and the alarm relay K1 switches. When the value also falls
below response value Ran2, LED "Alarm 2" lights too and the alarm relay K2 switches.
The locating current injector integrated in the device for insulation fault location is externally acti-
vated via the BMS interface or, when no master is available, via the integrated substitute master
function. When starting insulation fault location, the LED "PGH on" signals the locating current
pulse.
The insulation fault location can be started in the manual mode via the digital input 1. E.g. for the
insulation fault location with mobile insulation fault locator (e.g. EDS195).
isoPV1685PFR:
When the insulation resistance between the PV system and earth falls below the set prewarning re-
sponse value Ran1, only LED "Alarm 1" lights. When the value also falls below the alarm response val-
ue Ran2, the alarm relay K1 switches and the LED "Alarm 2" lights.
The residual current is detected via an external measuring current transformer. The r.m.s. value is cal-
culated by summing up the AC component that are below the cut-off frequency. When the residual
current exceeds the set alarm response value, the corresponding alarm relay K2 switches and the as-
sociated LED "Alarm IdN" lights up.
All relevant measured values and their statuses (Normal, Prewarning, Alarm) are cyclically sent via
the CAN interface.
The locating current injector integrated in the device for insulation fault location is externally acti-
vated via the BMS interface. When starting insulation fault location, the LED "PGH on" signals the lo-
cating current pulse.
The integrated µSD card (isoPV1685PFR only) is used as data logger for storing all relevant events.
The following measured values, statuses and alarms are stored during operation:
– Insulation resistances and leakage capacitances
– Residual currents
– System voltages, partial voltages to earth, supply voltages
– Temperatures: current controller PGH, coupling L+, L–
– Insulation fault, residual current fault
– Connection fault
– Device error
Following each start-up, a new log file is generated. If the current file size exceeds 10 MByte during
operation, a new file is generated. The file name contains the time and date of the creation time. The
typical time that is needed until the maximum file size is reached is approximately 2 days. Hence, a
SD card with a memory space of 2 GByte can record data for approx. 400 days. When the maximum
data limit is reached on your card, the oldest file in each case will be overwritten.
The history memory that is also copied to the µSD card contains all alarms in csv. format.

Function
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isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
3.3.1 Insulation monitoring
For insulation monitoring, a pulsating AC measuring voltage is superimposed on the PV system. The
measuring pulse consists of positive and negative rectangular impulses of the same amplitude. The
period depends on the system leakage capacitances in each case and the insulation resistances of
the system to be monitored.
Fig. 3.1: Pulse sequence of the measuring voltage for insulation fault monitoring
An insulation fault between system and earth closes the measuring circuit. When the insulation re-
sistance between the PV system and earth falls below the set response values Ran1 and Ran2
(1 = prewarning, 2 = alarm), the associated alarm relay K1 (11, 12, 14) switches. Detected insulation
faults are signalled to other bus devices via the BMS bus and the CAN bus. In addition, the alarm LEDs
Alarm 1 resp. Alarm 2 located on the pcb, which are not accessible during normal operation,will light
up.
3.3.2 Insulation fault location (isoPV1685P(FR))
For insulation fault location, a suitable locating current is superimposed onto the faulty PV system
with which EDS... insulation fault locators can locate insulation faults. isoPV1685P(FR) utilises an in-
ternal locating current injector with IL≤DC 50 mA.
Fig. 3.2: Pulse sequence of the internal locating current injector for insulation fault location
When permanently installed insulation fault locators (with master capability) are used ,such as
EDS460-D or EDS490-D, control and synchronisation of the locating current injector is carried out by
one of the insulation fault locators in BMS master mode. For this purpose, the isoPV1685P(FR) has to
communicate with the insulation fault locator via the BMS bus.
During the insulation fault location process, the function of insulation resistance
measurement is deactivated and the coupling is disconnected from the mains.
Um
t
2 s 4 s 2 s 4 s
I
L
t

Function
18 isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
Parameterisation of insulation fault location
By means of the BMS gateway, e.g. the COM460IP or terminal program, different modes can be
selected via the BMS bus:
•off:
Switch off insulation fault location
•auto (automatic): (Factory setting)
Insulation fault location and pause, alternately 5 minutes each. During each pause, the device
automatically switches to insulation fault measurement.
•1 cycle:
The locating current required for insulation fault location is supplied for 1 cycle (about 5 min-
utes) to the device.
•on (permanent):
The locating current required for insulation fault location is permanently supplied to the device.
In addition, the value of the locating current required for insulation fault location has to be set to
1…50 mA.
3.3.3 Residual current monitoring (isoPV1685PFR)
For the detection of insulation faults on the AC side, residual current monitoring was integrated into
the isoPV1685PFR. An external measuring current transformer with one measuring and test winding
is required for this purpose.
For current transformer monitoring an appropriate signal is delivered via the test winding that is
evaluated by the measurement winding.
3.3.4 Self test
3.3.4.1 Self test after connection to the supply voltage
Once connected to the supply voltage, all internal measurement functions, the components of the
process control such as data and parameter memory as well as the connections to earth are checked.
Once the self test is finished, after approx. 5 s the normal measurement mode begins.
If a device or connection error is detected, the corresponding alarm will be signalled via the BMS bus
as well as via the alarm relay K3 (31-32-34). This relay is continuously operating in N/C operation,
i.e. it de-energises even in case of a complete device failure.
During this self test, when the device is being started, the alarm relays K1 and K2 are not switched.
3.3.4.2 Automatic self test
All supply voltages are continuously monitored. The following tests are continuously carried out in
the background:
- Connection E-KE
- System polarity
- Residual current transformer (connection, short-circuit, isoPV1685PFR only)
- Temperature measurement
- Pulse generator

Function
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isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
3.3.4.3 Manual self test
The self test is started via the BMS or CAN interface by a BMS master with the test button or by any
CAN bus device.
Only in the manual self test mode (via BMS or CAN), the following tests can be carried out:
- internal Flash
- internal RAM
- CPU register
- Watchdogs
- Oscillator
- Function of the Iso measurement technique
-
Restart of the device including re-initialising and recalibration (only when the test is requested via BMS)
via the BMS bus.
During the manual self test via the BMS bus, the alarm relays K1 (11-12-14) and K2 (21-22-24) are
switched. K3 is only shortly switched over after a device restart.
via CAN bus
When the self test is started via the CAN bus, you can choose between an insulation fault measure-
ment test or a residual current measurement test (isoPV1685PFR only).
isoPV1685(P): During the insulation fault measurement test, the alarm relay K1 (11-12-14) and K2
(21-22-24)are switched over. K3 is not switched over.
isoPV1685: During the insulation fault measurement test, the alarm relay K1 (11-12-14) is switched
over. During the residual current measurement test, the alarm relay K2 (21-22-24) is switched over.
K3 is not switched over.
3.3.5 Assignment of the alarm relays K1, K2, K3
Relay assignment isoPV1685(P):
K1 switches when the value falls below the alarm response value Ran1 (insulation resistance).
K2 switches when the value falls below the alarm response value Ran2 (insulation resistance).
K3 switches in the event of a device or connection error.
Relay assignment isoPV1685PFR:
K1 switches when the value falls below the alarm response value Ran2 (insulation resistance).
K2 switches when the alarm response value IΔn2 (residual current) is exceeded.
K3 switches in the event of a device or connection error.
3.3.6 Standby mode
In standby mode, the coupling unit of the device is galvanically isolated from the system to be mon-
itored (isoPV1685PFR only). The standby mode can be activated resp. deactivated via the BMS chan-
nel 10:
Activate the standby mode using the BMS command STDBY 1
Deactivate the standby mode using the BMS command STDBY 0
Query the current state using the BMS command TRSH? 10
The standby mode of the isoPV1685PFR for example, allows team operation of inverters since in inter-
connected systems only one insulation monitoring device is allowed to be connected in each system.
Once a month, carry out a manual self test via the BMS or CAN bus to ensure that
the device functions correctly!

Function
20 isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
3.3.7 Measured value transmission to the control inputs of the inverter
All recorded measured values, operating messages and alarms are made available via the CAN bus
and the BMS bus. Communication is primarily carried out via the CAN bus.
3.3.8 History memory
All warnings, alarms and device errors including "Come", "Go" and "Acknowledgement" timestamps
are stored in the internal history memory.
The history data are copied from the internal EEPROM to the History.csv file on the µSD card under
the following conditions:
- following device start-up
- during operation once an hour
- when a compatible µSD card has been inserted
For the evaluation of the history memory, the Excel tool "iso1685 History.xlsx" can be made available.
This tool allows csv.-file data to be processed and evaluated. By way of example, history memory en-
tries are shown on page 48.
The tool includes detailed information about the use.