Facility Explorer FX15 - Extension Modules; XT91 D00 Extension Module

FX15 Controller Technical Bulletin
42
Note: The numbers inside the parentheses are the FX15 controller
terminal numbers.
Extension Modules
The input/output capacity of the FX15 controller may be extended by
connecting up to four extension modules via the Extension Bus
(XT-Bus, terminal J1).
An extension module is 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 5K 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 Electrically Erasable Programmable
Read-Only Memory (EEPROM) by the XT/XP only when you shut the
XT/XP down. Sometimes, when an application downloads to the FX15
controller, increments occur after the last XT/XP powerup; the
download is then lost. To fix this problem, shut down the XT/XP
module and then proceed with the program download.