Rice Lake 920i Installation Manual V4.0 - Manual (Page 18)

12 920i Installation Manual
Digital inputs and outputs are configured using the
DIG I/O menu. See Section 3.2.6 on page 47 for
configuration information.
An optional 24-channel digital I/O expansion card,
PN 67601, is available for applications requiring more
digital I/O channels.
NOTE: Digital I/O points can be configured to count
active pulse inputs by setting them to PROGIN
(DIGIN menu) and using the
iRite DigInSsBbActivate
handler with a timer to turn the handler on and off.
However, the fastest pulse rate that can be counted
using a digital input is 10Hz (10 pulses per second).
More demanding applications can use the pulse input
option card (PN 67603) to count pulses in the
4–4000Hz range.
2.4 Installing Option Cards
Each option ca rd is sh ip ped with installation
instructions specific to that card. The general
procedure for all option cards is as follows:
J5
J6
Option cards are not hot-pluggable.
Disconnect power to the
920i before
installing option cards.
1. Disconnect power to the indicator. Remove
backplate as described in Section 2.2 on page 8.
2. Carefully align the large option card connector
with connector J5 or J6 on the CPU board (see
Figure 2-6). Press down to seat the option card
in the CPU board connector.
3. Use the screws provided in the option kit to
secure the other end of the option card to the
threaded standoffs on the CPU board (see
Figure 2-6).
4. Make connections to the option card as required.
Use cable ties to secure loose cables inside the
enclosure as shown in Figure 2-7. When
i n s ta l l a t i o n i s c o m p le t e , r e a s s e m b le t h e
enclosure as described in Section 2.6 on
page 14.
Figure 2-6. Installing Option Card Onto CPU Board
PULSE INPUT
CARD
DUAL A/D
CARD
INDICATES
OPTION CARD
CABLE TIES
CT
CT
CT
CT CT
Wi-Port
Serial Card
Memory Card
Wireless Antenae
Figure 2-7. Installed Option Cards, Showing Secured
Cables
The 920i automatically recognizes all installed option
c a r d s w h e n t h e u n i t i s p o w e r e d o n . N o
hardware-specific configuration is required to identify
the newly-installed card to the system.