Trerice TR8938A90 Series Quick Start Instructions

All of the following wiring advice is based on the most popular configuration of the Trerice TR893 controller. In that there are numerous
incompatible options available (such as AC vs. DC power), please confirm that these shortcuts apply to the unit in hand.
There is a wiring diagram adhered to the side of each controller. All screw connections have a number molded into the controller case
(1/4 DIN-96x96mm, Universal AC power, Universal temperature inputs, 4-20mA Control Output)
Standard power required is AC, anywhere between 100V to 240V, 50 or 60Hz. Connect the AC power lines to screw terminals
Connect the equipment ground to screw terminal
Connect the controlled 4-20mA device (such as the model TA901 I/P transducer) to screw terminals
positive connection (Black wire on the TA901). Do not reverse the polarity of the transducer. If control action reversal is desired, this can be
accomplished programmatically by following the instructions in the instruction manual section titled
Thermocouple Installation
The thermocouple will have two color-coded wires. The red wire
is negative. Connect to screw terminal
(positive) is color-coded to indicate the thermocouple type.
Type J = Red/White
Type K = Red/Yellow
Type E = Red/Purple
Type S = Red/Black
Make a note of the thermocouple type then connect to screw
7
terminal .
If extension wire is required, thermocouple extension wire
of the same type (same color-code) must be used. DO
NOT USE COPPER WIRE. Do not reverse polarity at any
junction (stay red to red, white to white, etc.). Failure to
follow these instructions will result in unpredictable
erroneous readings.
If polarity is reversed at the screw terminals, heating the
sensor will cause the reading to drop.
1
2
3
4
5
6
+
7
8
-
9
RED WIRE
10
Thermocouple
immediately next to the screw connection, between the barriers.
Power Connection
13
. For best performance, do not separately ground the temperature sensor.
Control Output Connection
9
. The other wire
11
L 100-240VAC
!
50/60Hz
12
N
13
+
14
4-20 mA
-
15
16
17
18
19
20
©2006 H.O.Trerice Co., Oak Park , MI USA
14
RTD Installation
The RTD will have three color-coded wires. Two wires will be of
the same color and the remaining wire will be of a different color.
(Examples: Red-Red-White, Black-Black-Red, etc.) The two
wires of the same color are interchangeable and are to be
connected to screw terminals
to be connected to screw terminal
If a multi-meter is available, a resistance reading across
the two matched wires will indicate a short circuit (0 ). A
reading from either of these two wires to the remaining wire
will be approximately 109 at room temperature.
32°F = 100.0
65°F = 107.1
70°F = 108.1
75°F = 109.2
80°F = 110.3
A
B
B
RTD
11
and
15 14
and . Screw terminal
9 10
and . The remaining wire is
7
.
1 11
L 100-240VAC
!
50/60Hz
2 12
N
3 13
+
4 14
4-20 mA
-
5 15
6 16
7 17
8 18
9 19
10 20
12
.
is the
.