Chromalox 2104 User Manual

10 Chromalox 2104 Technical Manual
7
8
9
Figure 2.9
Voltage
Input Wiring
(Self-powered)
4-20mA
3
7
+24 Vdc
+
The 2104 has a +24 Vdc power supply which can be
used to power a 4-20mA transmitter.
1-5 Vdc
0-5 Vdc
+
Figure 2.10
Current
Input Wiring
(Loop-powered
by controller)
2104
2104
The digital input can be used in a number of ways:
•to control ramp/soak operations
•to switch between two setpoints, PID
parameters, or Auto/Manual control
•to reset an alarm
•to disable the control output.
Setup for the digital input is shown on the CTRl setup
page. An external switch, pushbutton or dry contact
can be connected to this input. Use isolated switches
only. Do not tie the Digital Input terminals to ground.
Digital Input
Connections
1
2
{
External
Input
+
-
Figure 2.11
Digital Input
Connections
External Switch
2104
1
2
+
-
Figure 2.12
Momentary
Contact
Pushbutton for
Ramp/Soak
2104

Chromalox 2104 Specifications

General

Brand	Chromalox
Model	2104
Category	Temperature Controller
Language	English