ENDEVCO 6634C
INSTRUCTION MANUAL
IM6634C
Page 4-8
C.
EXTERNAL FILTER
To use the 6634C in the external filter mode, install filter between pin 2, “BB-OUT”, and pin 13, “BB-IN”, of the 25
pin Output connector. Move jumper W3 (internal to unit) from the 1-2 position to the 3-4 position. With W3 in the
3-4 position, either an external filter must be installed, or a jumper must be installed between pins 2 and 13 of the
Output connector to complete the signal path. When using an external filter you are still able to use an internal
filter with the “FILTER IN/OUT” key on the front panel.
5.
ALARM
Warning and Alert alarms are remotely programmed and provide RS-232 signals when the vibration signal exceeds
preset levels.
At power-up, the alarm levels are set to the default settings which were previously stored in non-volatile memory.
A .
ALARM LEVELS
To remotely set the warning and alert Alarm Levels, send the following commands to the 6634C:
Wnnnnn;
Set Warning Alarm Level, where nnnnn is % of Full Scale in
floating point decimal format. Its value is equal to 0.(byte0)(byte1)
(byte2)(byte3) E (byte4).
Annnnn;
Set Alert Alarm Level, to nnnnn, where nnnnn is % of Full Scale
in floating point decimal format. Its value is equal to 0.(byte0)
(byte1)(byte2)(byte3) E (byte4).
If new Alarm Levels are successfully setup, no response will be provided by the 6634C. If a problem is
encountered, and the unit is in Listener/Talker mode, the error message E1XXXX "BEL", setup is not allowed, will
be provided by the 6634C.
The Alarm Level is stated in percent of Full Scale, and the allowable levels are from 1.0% to 100.0% of Full Scale.
Setting an Alarm Level of 100.0% disables the alarm.
To determine the current Alarm Level settings, send the following commands to the 6634C (after selecting the
specific 6634C unit as Listener/Talker using the InnXXX; command):
W?XXXX ;
Request current Warning Alarm Level
A?XXXX ;
Request current Alert Alarm Level
Unit responds with:
Wnnnnn "ACK"
where nnnnn is Warning Alarm Level in floating point decimal format.
Annnnn "ACK"
where nnnnn is Alert Alarm Level in floating point decimal format.
After the new Alarm Levels are successfully implemented, the unit returns to Normal Mode. (If Alarm Levels
cannot be implemented, unit provides "Err" message if in Listener/Talker mode and then returns to normal mode.)
Different Alarm Levels can be selected for each input type/output units combination. The new Alarm Level settings
are stored as the defaults for each input type/output units combination in non-volatile memory.
