Honeywell SV2 Series User Manual page 154

SV2 Series Safety Shut-off Valves
CHAPTER 9 : VALVE MAIN ELECTRONICS CHANGE-OUT PROCEDURE
Valve Main Electronics Replacement Background
Applies to valve firmware version 12.01 or later. HMI/PC Tool software version 12.01.002 or later
Should field replacement of the valve main electronics be necessary, ensure that the correct model is ordered. Refer to
and Table 14 and/or the model information on the main electronics assembly installed on the valve.
During normal operation, all on/off valve parameters and certain FARMOD fuel/air parameters are automatically backed up in
the valve main electronics board. Some specific premix fuel/air parameters are automatically stored in the FARMOD (fuel/air
ratio module) and are automatically loaded to the replacement main electronics from the FARMOD after power is reapplied.
Replacing the valve main electronics does not require extensive re-commissioning if the proper procedure is followed as
outlined in this chapter and the user is able to save and copy the configuration. The procedure involves first using the
Valve Production Cloning feature in the HMI / PC Tool to store the existing valve setup parameters, if possible, then physically
replacing the electronics assembly, copying the stored setup parameters into the new electronics and performing the safety
parameter verification procedure.
NOTE: When using the Pressure Module that the low gas pressure and high gas pressure settings must be re-
commissioned, if used.
After replacing the valve main electronics assembly and performing the Valve Production Cloning procedure, one or more
lockout condition(s) will result. Normal operation of the valve will be locked until the user performs the Safety Parameter
Verification Procedure. Any of the following faults can be active after replacing the valve main electronics, depending on the
valve configuration:
• 22: Lo-/Hi-Gas pressure not configured
• 47: Safety parameter verification
• 77: POC (proof of closure) of MV1 not verified
• 78: POC (proof of closure) of MV2 not verified
IMPORTANT
• If the Valve Production Cloning procedure is not performed BEFORE replacing the valve main electronics, parameters
will be lost including the valve body size. Additionally, the premix fuel/air OEM Setup + Ignition Setup parameters will be
set to their default values, causing non-optimized ignition and requiring re-programming of lost values.
• If the Valve Production Cloning procedure cannot be performed due to damaged components, the user will need
to manually enter parameters, including the valve body size and the premix fuel/air OEM Setup + Ignition Setup
parameters.
• DO NOT clone the premix fuel/air Base Curve during the Valve Production Cloning procedure. If the Base Curve is
cloned, the Base + Correction Curves that were stored in the FARMOD cannot be uploaded to the new main electronics
board.
• The fuel/air valves (V2V) FARMOD and main electronics CANNOT be replaced at the same time or all Honeywell
and OEM factory + field data will be lost, including the valve-specific stepper motor full stroke calibration. If both
components must be replaced, the installer must replace 1 at a time. Follow the Valve Main Electronics Change-Out
Procedure outlined in this chapter, restoring power after to preserve the configuration. Then follow the Fuel/Air Ratio
Module Change-Out Procedure in Chapter 8. This will preserve the most setup parameters.
• The valve main electronics SHALL NOT be replaced with a previously configured main electronics assembly. Using
a previously configured electronics assembly will result in possible data mis-matches, causing random faults or
inoperability of the valve.
New Valve Main Electronics Procedure
1. Save the valve's configuration, using the valve production cloning procedure for a configured valve. Refer to the
Valve Procedure in CHAPTER 7 for detailed cloning steps. Fig. 136 shows the valve production cloning save/load screen.
154
Table 1
Configured
32-00029—02