Status, Resetting, Open collector (solid state) output option – Omega Engineering DP3300 Series User Manual

Page 22: Alarm outputs

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DP3300 Series User’s Manual

Page21

If the unit is setup as an RPM monitor then following steps are performed for setting up various parameters:

FUNCTION

DISPLAY SHOWS

TO CHANGE


Filter

value

1,2,4,6,10,15,20,30,60

Push

^v key to obtain desired value


Decimal point

dP 9999

Push ^v key to

placement

dP 999.9

move decimal

dP 99.99

point to desired

dP 9.999

position.


Scaler

'SCALER' followed by preset scaler

Push ^v key to increment or decrement

value e.g. 10.00024 with active digit

active digit. Push <NXT> key to change

flashing.

active digit.


Division Factor

'DIV FAC' followed by preset division

Push ^v key to increment or decrement

by preset division factor( e.g. 12`

active digit. Push <NXT> key to

with active digit flashing).

change active digit.



Limit 1

'CH1 LT1' followed by preset Limit 1

Push ^v key to increment or decrement

Limit

2

value

e.g.

123.4 with active digit

active digit. Push <NXT> key to

Limit

3

flashing.

active

digit.

For

limits

2

&3

CH1 LT2, CH1 LT3

NOTE: Limit3 is audio visual alarm only

followed by limit value.

--- it has no relay output.


Relay deadband

'dEAdbd' followed by deadband

Push ^v key to increment or decrement

value e.g. 0002

active

digit.

Push

<NXT> key to make

next digit active.


Latching or non -

'LATCH' for latching mode.

Push ^v key to obtain alternate mode.

latching relay setup.

'NON LCH' for non latching mode.


Limit outputs prog-

LT1 N.O. or LT1 N.C

Use ^v key to obtain

rammed as normally

LT2 N.O. or LT2 N.C

alternate

mode.

open or closed

LT3 N.O. or LT2 N.C



ALARM OUTPUTS:

Status:

The system has optional process alarm outputs that are activated when limit is exceeded on any of the two channels. The alarms
can be programmed as normally open or normally closed (see SETUP) and latching or non-latching. The status of these alarms is
indicated on the front panel by LEDs. When ever an alarm is activated the respective LED is turned on. Each channel has two
outputs (relay or open collector) and one audio visual alarm. Audio visual alarm provides a visual indication on the front panel
(LED) and a buzzer output if a programmed limit value is exceeded. Buzzer can be turned off, if so desired (look under SETUP).

Resetting:


Once energized, alarms can be reset in two different ways --- automatically or manually (non latching or latching). In non-
latching mode, the alarm outputs will de-energize on their own when process variable drops below the limit value. In latching
mode, they stay energized even if the process variable drops below the limit. To reset the energized outputs in the latching mode,
first make the display indicate the limit that needs to be reset (e.g. "CH1 LT2"), by pushing the DATA key. Next, keeping the
DATA key pushed while limit value is displayed, go on to push the RESET key. The respective alarm output will de-energize
and the system will indicate so by displaying RLY RST.

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