Bell & Gossett 193 TECHNOVAR VARIABLE SPEED PUMP CONTROLLER AND INTEGRATED AJUSTABLE FREQUENCY DRIVE - Manual (Page 67)

Operating Instruction
67
Check the pressure transmitter!
After the cause has been remedied, the malfunction can be reset by cutting off the
power supply for >30 seconds or pressing all three buttons ( ,
and . ) together for
about 5 seconds.
All error signals are given at terminal X2/1, X”/2 and X2/3 (changeover contact).
If no Error is active, the relay switches on and terminals X2/2 and X2/3 are closed.
Attention If "AUTO - START ON" and "ERROR-RESET – ON" are programmed, the unit
can start again automatically after a power failure.
11.11 Additional Error signals:
ERROR 1 : EEPROM-ERROR (corresponding data block malfunction)
ERROR 2 : Security error / Software protection error
ERROR 4 : Buttonboard error (e.g.: jammed key)
ERROR 5 : EPROM-error
ERROR 6 : Program error: Watchdog error
ERROR 7 : Program error: Processor pulse error
ERROR 8 : Program error: invalid processor command
These ERROR signals can be reset by cutting off the power supply for >30 seconds or
pressing all three buttons ( , and. ) together for about 5 seconds.
If the error signal should appear again, contact customer service and provide a detailed
description of the error.
12 RS 485 - Interface
Standardized Bus-Interface for communication between the inverters (Technovar Drive heads)
and/or an overruling external control system.
The data protocol complies with ISO 1745 for RS 485 interfaces and contains the following
configurations:
Data rate : 9600 Baud (1 Startbit, 8 Data, 1 Stopbit)
An interface inverter RS 232/RS 485 is necessary in case communication with a V24 interface of
a PC or another external control system is wanted.
All parameters can be approached via the standard interface. The inline structure of the
Technovar Drive head can be obtained upon request.
1A fist
1E Status word: