22
RS-232
↔
CURRENT LOOP INTERFACE CONVERTER
Figure 7-1. Component Layout.
WI
DTE/DCE
SW C
SWITCH C
(DTE/DCE)
SWITCH A
(Current Loop Configuration)
U1
U2
U3
U4
C5
C4
U6
U5
SW B
SW A
TD
RD
C6
C7
Q2
Q3
Q1
LEDs
CURRENT LOOP
INTERFACE CONNECTOR
POWER
CONNECTOR
RS-232
INTERFACE
CONNECTOR
SWITCH B
(20/30/60 mA)
T+
T-
R+
R-
7.1 Description
The RM005 Rack can hold up to
16 CL050C printed circuit cards and
fits in a standard 19-inch equipment
rack. The RM005 comes complete with
its own built-in AC power supply. The
operation of the CL050C is the same as
the CL050.
WARNING!
Do not apply primary power
until after you have properly
configured the RM005 power
supply.
•
For 115 VAC ±15%
primary power: Set 115/230
7. Current Loop Rack and Cards
voltage selector switch to
115 and make sure the input
fuse is rated at 1 A.
•
For 230 VAC ±15%
primary power: The voltage
selector switch must be set
to 230 and the fuse must be
rated 0.5 A.
Inside the fuseholder are
two fuses. Open the
fuseholder by pressing
down on the cover, then
release. The fuse closest to
the cover is a spare. Select
the correct fuses and place
them in the Fuse Retaining
Cover. Discard the incorrect
fuses.
