Add extracted tools: CitrineOS, OpenOCPP, ShapeShifter
- CitrineOS core extracted (CSMS OCPP 2.0.1) - OpenOCPP extracted (firmware OCPP 1.6J/2.0.1) - ShapeShifter library installed (pip install -e) - ShapeShifter specification extracted - EVerest extracted TODO updated with progress
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.. _everest_modules_handwritten_Bender_isoCHA425HV:
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.. ******************
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.. Bender_isoCHA425HV
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.. ******************
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IMD driver for Bender isoCHA IMD devices
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Default settings
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================
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By default the Bender IsoCHA type insulation monitor devices come pre-configured with the following settings:
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* 19200 baud / even parity / 1 stop-bit
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* bus address: 3
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If you want to change those settings, you need to use the manufacturer's configuration software or change the settings on the device's LCD display and buttons.
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Bus termination
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----------------
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The Bender IsoCHA devices come with an internal 120 Ohms switchable bus termination resistor on the modbus connection terminals. To use it, put the switch into the upper (on) position.
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Settings overwritten by the driver
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----------------------------------
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During initialization, this driver overwrites the following settings:
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* set "pre-alarm" resistor R1 (default = 600k) [register 3005 and following]
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* set "alarm" resistor R2 to slightly lower than R1 (= -10k) [register 3007]
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* disable low-voltage alarm [register 3008 and following]
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* disable overvoltage alarm [register 3010 and following]
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* set mode to "dc" [register 3023 and following]
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* disable automatic self-tests [register 3021 and following]
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* disable line voltage test [register 3024]
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* disable device (only if the configuration option ``threshold_resistance_kohm`` is set to its maximum of 600 [k Ohms]) [register 3026]
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Startup and operation
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=====================
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To start the device and begin insulation (and voltage) measurements, send a "start" command via the device's MQTT interface. The device will then begin sending its measurement data once a second.
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After the desired measurement has been retrieved, disable the device via an MQTT "stop" command on its interface.
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Devices with firmware version newer than 5.00 support a faster self test mode to reduce CableCheck time. This will automatically be used if supported by firmware.
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Using the internal alarm functions and relays
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=============================================
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The external alarm relays should be used to ensure shut down of the DC HV voltage independently from the Linux host. Make sure to configure the thresholds correctly.
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