Red Lion IRMA - Manual (Page 6)

6
APPLICATION
The temperature of certain industrial plastics is critical for melt flow of an
injection molding process. Different plastic grades and the complexity of the
mold determine required temperatures for efficient material flow. The master
control room monitors the temperature of the melt flow of each injection mold
machine. They will determine whether the operator may start the process on his
machine or override the injection molding process. The injection molding
machines are located throughout the plant, posing an RTD signal loss problem
from long cable runs. The IRMA DC powered unit is mounted at the machine
and uses the local 24 VDC for power. The signal loss problem is solved using
the 4 to 20 mA analog output for the long cable run to the master control room.
ERROR
POWER
VDC+ 10
7
V+ 4
I+ 1
VDC- 12 11
9 8
6 5 V-
3 2 I-
MELT FLOW
MONITORED
MACHINE'S
POWER SUPPLY
24VDC
COMM
MASTER
CONTROL
ROOM
+
-
RTD(+)
RTD(S)
RTD(-)
G Rail Installation
To install the
IRMA on a “G”
style DIN rail, angle
the module so that
the upper groove of
the “foot” catches
under the lip of the
top rail. Push the
module toward the
rail until it snaps
into place. To
remove a module
from the rail, push
up on the bottom of
the module while
pulling out away
from the rail.
T Rail Installation
To install the IRMA
on a “T” style rail,
angle the module so
that the top groove of
the “foot” is located
over the lip of the top
rail. Push the module
toward the rail until it
snaps into place. To
remove a module from
the rail, insert a
screwdriver into the
slot on the bottom of
the “foot”, and pry
upwards on the module
until it releases from
the rail.
INSTALLATION
The unit is equipped with a universal mounting foot for attachment to standard DIN style mounting rails,
including G profile rail according to EN50035 - G32 , and top hat (T) profile rail according to EN50022 - 35 x 7.5
and 35 x 15. The unit should be installed in a location that does not exceed the maximum operating temperature and
provides good air circulation. Placing the unit near devices that generate excessive heat should be avoided.