8
#
Name
Category
Description
1
Display Headers
Display
OLED Display: 16-pin header connector that the CSC400 display flex cable
connects to.
VFD Display: 14-pin header
There are also two vertical headers (5-pin/6-pin) for alternate cabling for the
displays.
2
Control Processor
Programming
Header
Programming
Programming header (factory use only) for reprogramming the onboard
Control microcontroller.
3
Communications
Processor
Programming
Header
Programming
Programming header (factory use only) for reprogramming the onboard
Communications microcontroller (Ethernet & USB functionality only. RS485
Modbus communications is performed by the Control microcontroller).
5
DIP Switches
Inputs/Control
DIP switches for user options configuration (see "DIP Switch Option
Settings" section on page 53).
6
"AUX1 Relay" &
"AUX2 Relay"
Output (dry
contacts, solid
state, 120mA max
for each)
Control
"AUX1 Relay" & "AUX2 Relay" outputs are present to allow users to control
external valves, switches, or other controls based on the TC1/2/3
measurements. Each relay contact can be controlled by any of the three
thermocouples.
- AUX1/2 Relays: "NC" and "COM" are connected together if TC
measurement is lower than the selected setpoint.
The thermocouple used for the "AUX1 Relay" and "AUX2 Relay" (and the
mode) can be changed using the menu system on the front panel of the
CSC400. See the section titled: "AUX1 Relay & AUX2 Relay Outputs" on
page 16.
7,
8
Expansion
Module Locations
Expansion
Locations for future expansion modules.
9
Spare Fuses
Power
Spare 6.3A fuses for field servicing.
10
Keypad / Overlay
Header
Inputs/Control
5-pin Header connector that the flex cable from the Keypad overlay on the
front panel connects to.
The CSC400 will shut off all ignitor outputs and solenoid valves if the overlay
is unplugged.
12
Modbus DIP
Switch
Modbus/RS485
DIP switches for selecting termination options for the Modbus/RS485
communications cable
13
Modbus
Terminals
Modbus/RS485
Terminals for connecting a Modbus/RS485 communications cable. CSC400 is
a Modbus RTU slave in a 8N1, 9600 baud default configuration.
14
Thermocouple 1
Inputs/Control
Thermocouple 1 input terminal connections. Ensure proper polarity for
correct operation. Use ungrounded thermocouples.
15
Thermocouple 2
Inputs/Control
Thermocouple 2 input terminal connections. Ensure proper polarity for
correct operation. Use ungrounded thermocouples.
16
Thermocouple 3
(optional)
Inputs/Control
Thermocouple 3 input terminal connections. Ensure proper polarity for
correct operation. Use ungrounded thermocouples.
17
4-20mA (or 1V-
5V) Level Input
Inputs/Control
Terminals for connecting a 4-20mA (or 1V-5V) transmitter indicating a Level
input for controlling CSC400 shutdown or for process measurement.
Complete configuration of this input is provided using the menu system (See
4-20mA Input Level / Pressure (1 / 2) Menu Options
on page 38).
18
4-20mA (or 1V-
5V) Pressure
Input
Inputs/Control
Terminals for connecting a 4-20mA (or 1V-5V) transmitter indicating a
Pressure input for controlling CSC400 shutdown or for process measurement.
Complete configuration of this input is provided using the menu system (See
4-20mA Input Level / Pressure (1 / 2) Menu Options
on page 38).
19
4-20mA Output 1
Output Status
The 4-20mA output generates a current output relative to the measured
temperature on either TC1, TC2, or TC3 (selectable via the menu system).
This output can be configured as either a direct temperature conversion, a
proportional valve output, or it can output either 4-20mA Input reading