Galvanic Applied Sciences ProTech903, Operation Manual

Page: 114 / 190

Revision 14
114 August 02, 2019
5.13.1 Digital Outputs and Solenoids
Each digital output has three configuration points – Description , Fail - Safe Position and Latch
Enable .
•
Description - The
Description
can be up to a maximum of 6 alphanumeric characters.
These output descriptions will also appear in the
Status
tab and on the analyzer LCD
screen under the CNFG menu.
• Fail - Safe Position - The
Fail - Safe
position is the position that the output will default to
should the output not be triggered. The Fail - Safe position is also the position that the
relays will switch to while the analyzer is in bypass mode. The Fail - Safe position can either
be Off or On . By default the fail-safe position for both relays and solenoids is off. If an
output whose fail-safe position is on is triggered by an alarm or some other event, the
output will then go to the off position.
•
Latch Enable - The
Latch Enable
allows the user to latch certain outputs. If an output is
latched, it means that the output will stay in its triggered position until the user clears the
latch, regardless of whether or not the event that triggered the output has cleared.
•
Latch State - The state of a latch is indicated by the coloured circle under the title
Latch
State
. A grey circle indicates that the output is not latched, while a red circle indicates that
the output is latched.
• Acknowledge – All latched outputs can be cleared by pressing the
Acknowledge All
Latches
button ( ) in the toolbar. Alternatively, individual latches can be cleared by
pressing the appropriate button in the
Acknowledge
column.
5.13.2 Analog Outputs
There are six isolated 4 – 20 mA Analog Outputs with four input fields. These fields are:
Description, Minimum, Range
and
Parameter
.
• Description - The Description can be up to a maximum of 6 alphanumeric characters.
These output descriptions will also appear in the Status tab and on the analyzer LCD
screen under the CNFG menu.
•
Minimum
- The Minimum field is used to enter the minimum numerical value that will be
represented on the analog output. This will be represented by a current output of 4mA on
the analog output.
•
Range – If a value of 0 is placed in the Minimum field, the
Range
field is the full scale
numerical value that will be represented on the analog output. This will be represented by a
current of 20mA on the analog output. However, if a value other than 0 is placed in the
Minimum
field, a current of 20mA will represent the SUM of the Minimum and Range value.
For example, if the minimum was 10, and the range was 50, a value of 60 would be
indicated by a current of 20mA.
• Parameter - The
Parameter
field includes a drop down menu to indicate the parameter to
be monitored by the analog output.