Horn / Piezo Menu; Comm Port Menu - RC Systems ViewSmart 200 User Manual

Document: UM-1021
 Failsafe controls relay activation for the common relays. Failsafe ON causes these
relays to de-energize during alarm conditions and energize when there is no alarm.
With Failsafe active, a power failure forces the relay contact to the alarm position.
 Horn controls how activating this relay will affect the horn driver circuit connected
to J2 on the motherboard. Choices are NO, STEADY or PULSE. Warning level
alarms might be set to pulse the horn with high alarms set for steady. Personnel then
know which alarm level is present by hearing the pulsing or steady horn.
 Turning Acknowledge ON (not allowed on Relay 1) allows Relay 2 to be
deactivated during alarm conditions by an Alarm Reset. This is useful if another
audible device is being driven by the relay. The acknowledge feature is not available
for Relay 1 since it is often used for driving a warning light and Relay 2 for driving a
horn. It could be dangerous if an operator acknowledged the horn AND the light
since no indication of the high alarm condition remains.
2.3.2

HORN / PIEZO MENU

 The ViewSmart 200 display PCB is equipped with a small audible piezo that chirps
when keys are pressed providing an audible feedback to the operator. It also may be
set to audibly indicate alarm conditions by entering YES into the Piezo On menu
item in Figure 2.10. This piezo will then mimic the Horn settings menus described
in section 2.3.1.
 The Horn ACK menu item determines if the Horn Driver output may be
acknowledged by an Alarm Reset. YES causes an Alarm Reset to silence the horn
even though an alarm condition remains active.
2.3.3

COMM PORT MENU

The system Comm Port menu allows setting RTU address for the optional slave
Modbus serial port. This slave port may be used to transfer ViewSmart 200 data to a host
device such as a PC, PLC, DCS or even another R. C. Systems Controllers. The slave
ViewSmart 200/2050/2150 Controller User's Manual
Figure 2.11
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Revision Level B