Installation guide

Warning
Please Note
The specifications of the product detailed on this
Set-Up Guide may change without notice. RDM
Ltd. shall not be liable for errors or for incidental
or consequential damages, directly and indirectly,
in connection with the furnishing, performance or
misuse of this product or document.
Ensure that all power is
switched off before
installing or maintaining
this product
Revision 2.7 Page 75 of 83
Mercury Plant Controller Installation Guide
Quickview
Pressing the “quickview” button during normal operation displays the target pressure. If a two-stage controller has
been configured, both target pressures are displayed on the corresponding Section display. Press the “quickview”
button again to go back to the normal display or wait for the time-out period to elapse.
Override
The override function allows the user to switch output stages on or off. Press the override and enter button together
for approx 3 seconds until “r-01” is displayed.
Use the “up” or “down” button to display the relays (r-01 to r-12) and 4 – 20mA outputs (A-01 and A-02)
For (r-01 to r-12) Press “Enter” and select “1” to turn the relay on and “0” to turn the relay off.
For (A-01 and A-02) Press “Enter” and use up and down buttons to select the output on 4-20mA outputs 1 and 2.
Press the “Enter” button when the desired output percentage is reached. Each output can be set between 0% to
100%
Override will last for 30 seconds then the output will return to normal operation.
Info Button
When this button is used, Section 1 and Section 2 analogue output values can be displayed. When pressed the
current analogue output percentage is shown on the corresponding Section display.
Standby Mode
Once in standby all configured stages are turned off and a standby alarm is generated for the given section. The
delay applied before a section enters standby is determined by the General Alarm Delay (P-61). Once this delay
expires the controller enters standby and a standby alarm is also generated for the relevant section.
Section 1 and Section 2 can be placed into standby independently using two separate status inputs or both
sections can be placed into standby at the same time from a single status input. P494 determines the Standby
configuration.
P494 set to 1 = On
Controller uses one status input to place both sections into standby. Parameters P-80 to P-91 (Option 7 Std 1 N/O
or Option 8 Std 1 N/C) are used to place both sections into standby from a single status input
P494 set 0 = Off
Controller uses two independent status inputs to place each section into standby independently. Controller uses P-
80 to P-91 (Option 7 Std 1 N/O or 8 Std 1 N/C) to put section 1 into standby. Controller uses P-80 to P-91 (Option 9
Std 2 N/O or 10 Std 2 N/C) to put section 2 into standby