H2fl ow Controls
ProcessDefender™
39
Programming
H2fl ow Controls
ProcessDefender™
38
Programming
⊲
Menu 3.3.3 - Main Alarm Relay (R1) operating status
This menu relates to the Main Alarm Relay Status. The factory default for the status is
‘NC’ (Normally Closed), which means that the R1 contacts will open when an alarm
/ trip occurs.
To change the status to ‘NO’ (Normally Open), fi rst press
or
button. Now
press the
or
buttons to change from NC to NO and press the
button to
accept the change.
The screen will now show 3.0.0.
Fig.5.2
5.5 Menu 4 - Pre-Alarm Relay (R2)
Menu Number
Description of Value to be Entered
4.1.1
Configure R2 to provide a Pre-Alarm warning of an abnormal process
Overload only, Underload only or both Over- and Underload
4.1.2
Set Pre-Alarm Overload trip point in either %, kW or HP depending on value
set in 2.7.1. Menu presence determined by 4.1.1
4.1.3
Pre-Alarm Underload trip point in either %, kW or HP depending on value set
in 2.7.1. Menu presence determined by 4.1.1
4.2.1
Set Response Delay for Pre-Alarm Overload trip. Menu presence determined
by 4.1.1
4.2.2
Set Response Delay for Pre-Alarm Underload trip. Menu presence determined
by 4.1.1
4.3.1
Set Relay 2 Latch
4.3.2
Set Relay 1 hysteresis. Menu presence determined by 4.3.1. Only present if
Latch set to ‘OFF’
4.3.3
Set Relay 2 to Normally Open or Normally Closed (NO or NC)
Scan the QR Code to
the left to watch an
instructional video about
Menu 4.
Relay 2 is assigned to provide an early warning (Pre-Alarm) of an abnormal overload
or underload condition. The relay output is typically used to provide a warning to the
equipment operator that something is going wrong. This may be in the form of a light
or audible alarm. This section will guide you through the steps to set the parameters
associated with R2.
