FX15 Controller Technical Bulletin
42
Extension Modules
The input/output capacity of the FX15 may be extended by connecting
up to four extension modules via the Extension Bus (XT-Bus,
terminal J1).
An extension module if formed by an XT91D00
processor/communications module and one or more XP expansion
modules. The expansion modules provide input/output capability for the
extension modules. The following are available for the XT91D00
extension module:
• XP91D02: six analog inputs and two analog outputs
• XP91D03: eight digital outputs (triac)
• XP91D04: four digital inputs and four digital outputs (triac)
• XP91D05: eight digital inputs
• XP91D06: four digital outputs 230 VAC (relay) (EU only)
• XP91D07: four digital outputs 24 VAC (relay) (NA only)
Analog inputs to extension modules may be 0-10 V, 0-20 mA or
passive RTD-Ni1000 (Johnson Controls characteristic only), Pt1000 or
A99 sensors.
Analog inputs to the XPA-421-5 module only may additionally be
RTD-Ni1000 (LandG and DIN), Pt100 and NI100 sensors or a 5 K ohm
potentiometer.
Voltage and current inputs from differential pressure transducers can
be linearized by a square root function.
Digital inputs to extension modules are potential-free contacts.
The input is active (true) when the contact is closed.
Digital counters are available in extension modules, which do not have
analog inputs or outputs. Digital counters are associated with digital
inputs. The number of positive transitions of the physical digital input
required to increment the counter can be programmed in the extension
module.
Note: Counter values are saved in EEPROM by XT/XP only at the
power down, in the particular situation of an application downloading to
the FX15 the increments occurred from the last XT/XP power-up and
the download are lost. The problem can be overcome if a power down
of the XT/XP module of interest is executed right before proceeding
with the program download.
Analog outputs in extension modules can be configured to provide
0-10 V, 0-20 mA or 4-20 mA signals. The output is ranged by low
range and high range variables to provide a 0-100% signal to the
extension module.
To Next Page
Loading...