See: Valve State - Overdriving - Resource Data Management PR0712-EPR Installation & User Manual

Mercury 2 & Intuitive Mercury EPR Stepper Installation Guide
P-19 Switch Resistors
P-77 Man Stop LLV/Fans
P-39 Stepper In Case Off
P-98 Lights Case Off
P-30 Valve Type
P-31 Step Max
P-32 Step Close
P-33 Step Speed
P-34 mA Peak
P-35 Half Step
P-36 mA Current Hold
P-37 Shut Speed
P-06 Shut Enable
P-07 Shut Time
P-05 Overdrive Time
P-20 Alarm Delay
P-21 UT Alarm
P-22 OT Alarm
P-23 Log Probe Type
P-24 Slug Log Probe
P-25 Log Alarm Delay
P-26 Log UT Alarm
P-27 Log OT Alarm
P-28 Monitor OT Alarm
P-40 Defrost Mode
P-41 Defrost Start
P-42 Defrosts per Day
P-43 No Defrost Time
Warning
Ensure that all power is
switched off before
installing or maintaining
this product
Please Note
off by changing this parameter to 0 and then back to the desired service interval. This process also resets
the Run Hours value to 0. To view the current Run Time value refer to the I/O list.
Enables switched resistors to be used for Plant Faults, External Defrosts, Case Clean, Man Trap, Door
Switch See : Switched Resistor Values
When man trap input is activated the valve closes and fans are stopped. Normal operation resumes when
the mantrap input is deactivated.
Selects whether the EPR valve is open or closed when the controller is in case off mode.
Used to place the controller into Case Off when its lighting timer is in the off state. When the lighting timer
is in the on state the controller follows its normal control operation. This feature is disabled if the set point
o
(P-01) is below 6 C. Please note that when the controller is in case off all alarms are inhibited and all
outputs are turned off. Therefore care must be taken when enabling this parameter.
 Off – Feature is not used and only the controller lights relay follows the lighting timer status.
 On – Feature is in use and controller will be in Case Off whenever the lights timer is in the off
state.
 Unused – This selection has no effect and should not be used. Please select from either Off or
On. This feature operates in either Local, using controller RTC, or Remote, using Data Manager
GP timer channel, lighting applications.
Choose from four preconfigured stepper valve types or select "Other" to enter Stepper characteristics for a
valve which is not listed.
See Valve Type
Number of steps controller will send to open valve to 100%. Consult the valve manufacturer to obtain the
required number of steps. (Has no effect if Valve Type 0, 1, 2 or 3 selected at P-30)
See Valve Type
Number of steps controller will send to close valve fully to 0% and overdrive the valve. The Steps required
when overdriving the valve can vary. Please consult the valve manufacturer to obtain the required number
of steps (Has no effect if Valve Type 0, 1, 2 or 3 selected at P-30)
See Valve Type
Increases and decreases the rate of step change. Enter a value in Hz. Valve Manufacturers specification
must be followed. (Has no effect if Valve Type 0, 1, 2 or 3 selected at P-30)
See Valve Type and Appendix 4 Step Speed.
Current requirement of motor. Care should be taken when setting this parameter as too high a setting
could damage the valve motor. Valve Manufacturers specification must be followed. (Has no effect if
Valve Type 0, 1, 2 or 3 selected at P-30) See
Uses half the range of the valve (Uses half value set in P-31 / P32). Has no effect if Valve Type 0, 1, 2 or
3 selected at P-30 See Valve type
Current supplied to valve when it is stationary, to prevent any drift in valve position
See: Holding Current
This is the speed in Hz that the valve will shut at if the shut input (probe 7) becomes open circuit.
Enables the shut input from the Intuitive Power Store. Will only work if valve type P-30 is set to
"Other"
Once the shut input has been activated the valve will stay closed for this period even if the shut input is
removed.
This is the period in hours that the valve will close fully to allow the controller to re calibrate the valve
position, this is required as there is no feedback to the controller from the valve in regards to it's position.
See: Valve State – Overdriving
Delay for the over and under-temperature alarms
Under temperature alarm set point. This alarm uses the control temperature.
Over temperature alarm set point. This alarm uses the air-off temperature.
Allows the user to set the logging probe mode: -

Off

Logging with no alarms

Logging with alarms
Applies a damping factor. This can be used to make a standard probe have the same temperature
response as a logging probe.
Delay for the Logging probe over and under-temperature alarms
Logging probe under temperature alarm set point
Logging probe over temperature alarm set point
Monitor probe over temperature alarm set point
Allows the user to set the defrost mode: -

Local (Uses the internal parameters P-41 and P-42)

Remote (Requires a defrost schedule in the front end)

External (uses a switched resistor in input 1). When this signal is present a defrost is initiated.
Note: - If the external defrost signal is not removed then the controller will defrost according to the "No
Defrost" time and a missed defrost alarm will be generated. See P-29 for external defrost signal setup.
When defrost mode is set to "Local", this is the start time for the 1
When defrost mode is set to "Local", this is the number of defrosts per day equally spaced from the start
time.
If the controller misses a defrost command for any reason, a defrost will initiate after this time has elapsed
from the last defrost. Normally set to 2 hours over the normal defrost period.
Revision 1.2a
Valve Type
st
defrost
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