• Alarm type: Due to system fault conditions.
• Non-abbreviated description: High-High sensor temperature.
• Alarm message on thePerception software: Sensor Temp Cable Short.
• Priority: High.
• Parameter(s) involved:
- SensTemp HH; SysOK Relay;FaultTrig. submenu; see Section 3.2.3.
- STempAlr HH (alarm set point); Temperature submenu; see Section 3.3.2.1.
- TempoAlr Delay; Temperature submenu; see Section 3.3.2.1.
• Alarm cause(s): Temperature of the sensor above the Alarm Hi-Hi SP alarm
set point.
Proceed as follows:
1. The oil is probably too hot at the location where the sensor is installed; install
the Hydran M2-X at another location on the transformer tank, preferably at
the bottom. For details on typical installations, see Section 4.3.1.
2. If not already done, install the finned, high-temperature adaptor shown in
Figure A-6. This adaptor is available at General Electric.
8.2 RS-232 and RS-485 Communications
8.2.1 No Communication when the Host or Laptop Computer is
Connected Directly or by Modem to the Hydran M2-X’s DB-9
Connector
1. Ensure the Hydran M2-X’s CommChannel parameter (communication
channel; Communication submenu; see Section 3.2.7) is set to H201Ti-DB9.
2. Ensure the Hydran M2-X’s BaudRate parameter (data transmission speed;
Communication submenu) is identical to the one indicated in the Perception
software.
3. Ensure the Hydran M2-X’s H201Ti ID and PowerStat. ID parameters
(identification numbers of the Hydran M2-X and the power station;
Communication submenu) are identical to the ones indicated in the
Perception software.
4. In the Perception software, ensure the specified communication port is valid.
5. Verify the RS-232 link cable.
6. Ensure the modem’s configuration string is correct.
8.2.2 No Communication when the Host or Laptop Computer is
Connected Directly or by Modem to the Hydran 201Ci
Controller’s DB-9 Connector
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