Current Loop Rack And Cards; Description - Black Box 232/CL-E Manual

RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER

7. Current Loop Rack and Cards

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
primary power: Set 115/230
INTERFACE CONNECTOR
POWER
CONNECTOR
RS-232
INTERFACE
CONNECTOR
22
VAC ±15%
CURRENT LOOP
T+
T-
R+
R-
WI
C5 C4
DTE/DCE
U1
U2
SW C
SWITCH C
(DTE/DCE)
Figure 7-1. Component Layout.
voltage selector switch to
115 and make sure the input
fuse is rated at 1 A.
•
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
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.
U6 U5
C6 C7
Q2
Q3
U3
SW B
Q1
U4
SWITCH B
(20/30/60 mA)
For 230 VAC
fuses. Open
TD
LEDs
RD
SWITCH A
(Current Loop Configuration)
SW A
±15%
the