Specifications

Sicon-8 Technical Manual CircuitWerkes, Inc.
52
Relay Commands
Serious injury or death can occur if a command channel is activated while you are performing
maintenance on your equipment. If you are performing maintenance on your equipment, you
should press the REMOTE/LOCAL button on your Sicon-8 to switch into Local mode. The LED
indicator changes to a flashing red. Local mode prevents the unit from issuing command outputs.
All metering and status information is still available to remote software users, but the Sicon-8 won't
accept incoming telephone calls until a user programmed number of rings (default = 20
th
ring) and
will not accept any commands or change the state of any of its relays. By default, the Sicon-8 cannot
remotely exit from the local mode but, it is possible to set the Sicon-8 up so that an administrator can
remotely toggle the Sicon-8 out of local mode. For additional safety it is strongly suggested that, in
addition to setting the Sicon-8 to Local mode, the remote/local switch on any transmitter or
high Voltage equipment also be set to the local mode.
Relay Operation
The Sicon-8 employs six channels (1 thru 6) of SPST relays. The remaining two channels (7 & 8) have DPDT relays.
Normally, each relay operates independently of all others. Relays are also configured for momentary operation. Under
independent & momentary operation the following applies to all relays:
* - An asterisk (star) operates the current channel’s RAISE relay for the duration of the DTMF tone
# - Pound operates the current channel’s LOWER relay for the duration of the DTMF tone
Special relay DTMF command modes for latching & tied relays
There are two special modes of operation available: The DPDT relays can be operated in latching or momentary mode.
Any channel can have its raise & lower relays locked together so that they both operate from a single command,
determined by the mode of the raise relay.
When the raise & lower relays are locked together in momentary mode, the asterisk (*) operates both relays.
Raise & lower relays on channels 7 & 8 can be latched independently of each other or set to operate together as in the
case of the previous six channels. Four sub-modes of operation are possible for relays on channels 7 & 8. Note that, in
most cases, latching relays require a two-digit command to turn them on & another two-digit command to turn them off.


 When in independent latching mode for both relays on a channel, *1 latches the raise relay and *0
unlatches the raise relay. #1 latches the lower relay while #0 unlatches it.


 When the raise relay is in latching mode and the lower relay is momentary, then *1 latches the raise
relay and *0 unlatches the raise relay. # closes the lower relay for the tone duration.


 When the raise relay is in momentary mode and the lower relay is latching, then # closes the raise relay
for the tone duration. #1latches the lower relay and *0 unlatches the lower relay.


 In firmware versions below 1.30, when relays 7 and/or 8 are in latching mode and the raise & lower
relays are locked together, then * latches both relays and # unlatches both relays (exception to 2-digit
rule). Relays operate use their specific mode’s on/off codes above FW v1.3.
For Firmware below 1.30, when relays 7 and/or 8 have their raise & lower relays are locked together, the mode that is programmed
into the raise relay determines the mode of operation for both relays. Any time that both relays are locked together, they are always
controlled by a single (*) for momentary or a single (*) for ‘ON’ and a single (#) for ‘OFF’ when in latching mode. If your firmware is
1.31 or up, then the controls for raise and lower are both active and both relays will follow whichever command is entered.
********************** End of Channel Menu Commands ****************************
WARNING!
See
Note
Below