Nidec Kato Engineering KRM2000 - USB Communication and EEPROM; USB Port for Communication; EEPROM and Fault Indications

30 | Kato Engineering, Inc.
3. The Bluetooth module is placed back into discoverable, or connectable-only, mode and then
removed from this mode by button push, or timeout, while no connection is communicating
with the Bluetooth module.
5.3.3.3 Port B (USB)
The KRM2000™ is provided with a USB module which requires a connection using a type B USB
connection to allow for communication with external devices. Each time a connection is made to a
new KRM2000™ a driver will have to be downloaded and installed. This driver is used to create a
Virtual Com Port (VCP) which allows the connecting device to view the KRM2000™ as a serial port.
Generally the operating system of the connecting device will handle the device driver installation and
port binding. However it is recommended that prior to connecting to the device the relevant driver be
downloaded from this link in order to insure the latest driver is always being used for the required
operating system. The most recent drivers are located at the following link and labeled as the
Anybus Transport Providers package
http://www.hms.se/support/support.asp?PID=333&ProductType=Anybus-CompactCom.
5.3.4 EEPROM
The KRM2000™ receiver contains 256k of internal memory allocated for set point storage. It is
important that after every change to either the system or protection, that the user performs an
EEPROM write.
5.4 Protection Features
The KRM2000™ receiver contains multiple protection features, and of these protection features
some are provided to be configured by the user. This section will describe each feature as well as
the programming limits, if available.
5.4.1 Service Fault
The KRM2000
TM
receiver has the capability of indicating whether an internal hardware and/or
software failure has occurred. This will activate a service fault. A service fault will open up the
service fault relay contact during this condition. The service fault contact output is operated as a
normally closed contact, and will operate upon removal of power from the receiver.
5.4.2 Malfunction
The malfunction indicates when there is a failure within the system itself. This will include loop
undervoltage, loop tuning malfunction, radio link error, and loop short circuit failure. When this
condition occurs, the malfunction relay contact output will close while the digital output will go high
(+24V).
IMPORTANT: THE KRM2000
TM
RECEIVERS HAVE BEEN CAREFULLY DESIGNED TO NOT
ISSUE A “GROUND FAULT” OUTPUT IF ANY SYSTEM PARAMETER IS OUT OF TOLERANCE.