System 9000TS
49
SECTION 9 – P925TS-I INPUT CARD
The P925TS-I Input Card is capable of accepting sixteen digital inputs and is equipped
with a micro-controller and EEPROM, which allows configuration details to be stored in
non-volatile memory. No battery backup is required to maintain this memory and
system configuration can be changed tens of thousands of times without degradation.
All inputs are optically coupled to ensure maximum reliability in harsh electrical
environments, however as field contacts are often great distances from the
annunciator it is still advisable to run the contact cables separately from circuits
carrying heavy currents and/or high voltages to minimise the effects of induced
voltages from these cables. A transient filter is built into the input circuitry so that low
voltage interference will be ignored.
Voltage inputs can also be used if the 0VS of the 9000TS is linked to the OV of the
direct voltage supply to provide a common reference.
Normally open or normally closed continuous or fleeting contacts can be used and the
input can be software configured to capture events within the range 1 to 65,000 mS
Signal Input Voltage Selection
The P925TS-I Input Card is suitable for operation from either 24VAC/DC or
125VAC/DC switched or powered inputs. Each card is equipped with shorting links
LK1 to LK16, which allows the user to select the associated field input voltage for each
channel. In standard applic24VDC is derived from the P925TS-X Interface
Card for use as a signal supply voltage but it is possible to use external voltage
sources if required.
1 2 3 4
SW1
OFF
ON
LK1
LK2
LK3
LK4
LK5
LK6
LK7
LK8
LK9
LK10
LK11
LK12
LK13
LK14
LK15
LK16
LK1
LK1
24VAC/DC VERSION
125VAC/DC VERSION
OR
5
8
7
6
CARD ADDRESS SETTING
SW3
1 2
2
1
SW2
RX
TX
RX
TX
REM
LOC
OFF
ON
END OF LINE LOAD RESISTOR
SWITCH TO ON IF LAST IN CHAIN
24V
125V
REFERENCE FIELD
RTK LOCAL
COMMS
REMOTE
COMMS
PG1
1
8
4
2
128
32 64
16
BINARY
