Orion-M
3.2 FDC Orion-M
CONFIGURING THE UDC2500/3200 CONTROLLER
3.2 Input Type Assignments
The Honeywell UDC2500/3200 controls provide universal input types for input 1. An optional analog input
(voltage/current) for input 2 is available on the UDC2500 while the UDC3200 can provide an optional
universal input for input 2. The Loop Input # for the corresponding control in the Orion-M Configurator is set
to match the selected input type for input 1 of the UDC control while the second input can be configured as a
monitor point in the Orion-M.
IMPORTANT:
The Orion-M is unable to detect sensor break or input failure conditions on the Honeywell
UDC2500 or UDC3200 controller. Therefore, a problem may exist with a controller input, but
the Orion-M will be unable to report the alarm condition.
If the failure of an input is a critical alarm condition that requires monitoring, the orion-M
provides 30 alarms that can be configured to any loop or monitor input. A process alarm can
be configured with alarm set points outside of the normal operating range for the input. A
failure of the input on the UDC2500/3200 would result in a high scale or low scale break,
which could then be detected and reported by the alarm set in the Orion-M.
3.2.1
Input 1 Operation
When input 1 of the UDC2500/3200 is a temperature input, i.e., RTD or thermocouple, the temperature units
of the input on the UDC2500/3200 must be set to match the selection in the Orion-M on the Degrees C/F
screen. The Orion-M can not change the temperature units on the UDC controller. Thus, when you set up
the UDC controller, its temperature units must match that of the selection in the Orion-M. If the selections do
not match, the Orion-M may show units of degrees Centigrade while the actual value from the UDC control is
in degrees Fahrenheit.
In addition, if %RH (wetbulb) is selected for a Loop Input in the Orion-M Configurator, the temperature units in
the Orion-M must match the UDC controllers for the drybulb/wetbulb calculation to be performed correctly. If
the temperature units do not match, the relative humidity reading on the Orion-M will not be correct.
NOTE:
It is recommended that the Degrees C/F selection screen be disabled in the Orion-M Configurator
once the proper temperature units selection has been made to prevent it from being accessed. This
will prevent the temperature units from being accidentally changed and causing operator confusion
when the units do not match between the UDC control and the Orion-M. See section 3.6 Orion
Functions/Startup View, in the Orion-M Configuration Manual for information on enabling and
disabling this item.
For either temperature or process (voltage/current/carbon) input types, the Orion-M will set the lower and
upper set point limits for the input to match the settings in the Orion-M Configurator. The decimal point
selection for the Loop Input in the Orion-M and the UDC controller do not have to be set to match; however, if
the loop controls are visible to the operator, it is recommended that the decimal point resolution of the Orion-
M and UDC controller match.
Loop Inputs set as temperature in the Orion-M Configurator allow a decimal point selection of 0 or 1. Process
type loop inputs can be displayed on the Orion-M with a resolution of 0 to 3 decimal points. The Orion-M has
a display range of -32768 to 32767, -3276.8 to 3276.7, -327.68 to 327.67 or -32.768 to 32.767 depending
upon decimal point selection. When selecting the decimal point resolution for the Loop Input in the Orion-M
Configurator, make sure that range of the UDC2500/3200 does not exceed the range selected in the Orion-M
or the value may not be displayed correctly.
IMPORTANT:
The lower and upper set point limits are set once, each time the Orion-M enters the runtime
application. Do not alter the values in the UDC2500/3200 control once they have been set or
the Orion-M may not be able to set the correct set point to the controller.
Summary of Contents for Orion-M
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