Sensor Positioning; Operating Mode; Functional Description - Chauvin Arnoux STATOP 4850 Manual De Instrucciones

2.3.5. Alarm and control outputs on internal relay
The figure below shows the mounting using the internal relays to drive
a low load.
The consumption must not exceed 3 A.
2.3.6. Alarm and control outputs on external relay
2.3.7. Control outputs on logic voltage
The controllers supplied with a logic output produce an uninsulated modulated
voltage (0-20 V max, impedance 660 Ω).
The wiring diagram is shown on the right.
2.3.8. Analogue control outputs
There are 3 types of analogue outputs that can be selected for control.
The wiring diagram is shown on the right.
2.4.

SENSOR POSITIONING

The quality of control greatly depends on the positioning of the sensor. The probe should be placed so that it can detect process
changes with a minimum of lag time. In a process that requires fairly constant heat output, the probe should be placed close to the
heater. In processes where the heat demand is more variable, the probe should be closer to the work area. In a liquid process,
addition of a stirrer will help to eliminate thermal lag. Some experimenting may be required to find the optimum position for sensor
positioning.
3.1.

FUNCTIONAL DESCRIPTION

"Measurement" red display (PV = Process Value)
"Setpoint" green display (SV = Set Value)
"OUT" red indicator (output of control 1)
Key
Key see 3.4 Using the keyboard
Key
°C and °F green indicators
Red indicator A1 (output alarm 1)
Red indicator A2 (output alarm 2 or control 2)
Ouput Ouput 2
control 1
alarm 2
7 3
or
or
8
4
3-phase
triangle
load

3. OPERATING MODE

Ouput
control 1
7
o r
8
Ouput
alarm 1
5
Power supply
6
Contactor
3
4
24
Ouput 2 Ouput
Max.
alarm 1
alarm 2
3 A resistive
Load
5
3
o r
6
4
3-phase
power
Static relay
+
+
7
6
or
8
-
-
+
3 7
or
4 8
-
A1 A2 PV °C
SV
OUT
STATOP 4850
Power supply
Load
Power supply
0-20 mA
or 4-20 mA
or 0-10 V
°F