2 Installation
XSeriesG4 Remote Controller User's
manual
2103334 Rev. AB
| 41
Board configuration
Table 11 is a brief description of each configurable point on the XRC
G4
main electronic board and its function. The board
diagram shows the location of these items (Figure 43).
Table 11: XRC
G4
on-board jumper settings
Jumper No.
Description
J7 and J10
RS-485 Termination:
When there are multiple XRC
G4
daisy-chained together on a single RS-485 bus, the bus
must be properly terminated. When the XRC
G4
is the
last
or
only
unit on the bus, the jumper should be across pins
1 and 2. If the unit is
first or intermediate,
the jumper should be across pins 2 and 3.
J5, J9, J11 and
J12
Pulse Input (PI) Debounce:
When using any of the digital inputs as pulse inputs you may want to enable
debounce for that input. Debounce enables an RC Time Constant that will tend to debounce noisy relay or switch
closures. However, if the PI is monitoring a fairly high-speed input, enabling debounce could cause a loss of some
of the pulses. To enable debounce jumper across pins 2 and 3.
J21, J22, J24,
J25 and J26
Analog Input (AI) Configuration:
The XRC
G4
controller board supports both voltage input and current loop input AI.
A jumper across pins 2 and 3 establishes the associated AI as a 0-10 Vdc voltage input. A jumper across pins 1
and 2 establishes the associated AI as a 0-20 mA Current Loop Input.
J1
Lithium Battery Backup:
J1 enables or disables memory backup via the lithium cell battery. A jumper across pins
1 and 2 enables RAM memory backup. If the jumper is removed (or across pins 2 and 3) the lithium cell is not
enabled for memory backup. Should power be lost or disconnected while the lithium cell is not enabled, the
XRC
G4
main processor board will execute a
COLD Boot
and all historical data will be lost.
S1
Security Switch:
If the security switch is on and a local connection is made to the unit via PCCU, the proper
security code must be entered. If the proper security code is not setup in PCCU, the operator will be unable to
configure the XRC
G4
. If the security switch is turned
off
, the user will be able to configure the XRC
G4
without
secure access.
OFF
ON
S1
AUXPWR OUTPUT
DIGITAL I/O
J20
J23
1
1
XA
1
A
J8
1
J10
3
J7
1
3
J6
C
O
M
M
2
C
O
M
M
1
1
2
3
4
5
6
8
7
9
10
COMM2
B
COMM1
XA
2
J11
J12
J5
J9
1
3
RS-485 Terminations
Pulse input debounce
Analog Input 0-20ma or 0-10VDC
Lithium battery backup
Security Switch
CPU ENGINE
J24
J25
J21
J22
J1
J26
Figure 43: XRC
G4
main electronic board jumper configuration
