Honeywell UDC2500 - Manual (Page 170)

Output Calibration
156 UDC2500 Universal Digital Controller Product Manual 4/07
6.4 Restore Output Factory Calibration Procedure
Introduction
The factory calibration constants for the Current and Auxiliary Outputs are stored in its
non-volatile memory. Thus, you can quickly restore the “Factory Calibration” for those
outputs by simply changing the CO RANGE or AO RANGE to the other setting and then
changing it back to the original type.
Refer to Table 6-5 Restore Factory Calibration for procedure
ATTENTION
A restored factory calibration overwrites any previous field calibration done for the output.
Protect your field calibration from accidental overwrites by configuring the appropriate
LOCKOUT selection after calibration.
See Section 3 - Configuration for specific instructions to set the lockout.
Table 6-5 Restore Factory Calibration Procedure
Step Operation Press Result
1 Set LOCKOUT to
NONE
Setup Setup
until you see:
Upper Display
= SET
Lower Display = TUNING
Function Function Function
Until you see:
Upper Display = one of the following:
NONE – all parameters are read/write
CAL – all parameters are read/write except Calibration
CONF – configuration parameters are Read Only; no writes
permitted
VIEW – Tuning and Setpoint Ramp parameters are
read/write. No other parameters can be viewed.
ALL – Tuning and Setpoint Ramp parameters are available
for read only. No other parameters can be viewed.
Lower Display
= LOCK
or
Until NONE is in the upper display
2 Enter OUTPUT
or OPTIONS
Setup Group
Setup Setup
until you see:
Upper Display
= SET
Lower Display = OUTALG (for the Current Output)
- or -
Lower Display
= OPTION (for the Auxiliary Output)
Function Function Function
until you see:
Upper Display
= the current selection
Lower Display = CRANGE (for the Current Output)
- or -
Lower Display
= ARANGE (for the Auxiliary Output)
or
to change the range configuration to the other selection
3 Scroll through
Functions
Function Function Function
until the lower display rolls through the rest of the functions and
returns to: