ACL CSC400 Installation And Operation Manual page 8

# Name
1 Display Headers
2 Control Processor
Programming
Header
3 Communications
Processor
Programming
Header
5 DIP Switches
6 "AUX1 Relay" &
"AUX2 Relay"
Output (dry
contacts, solid
state, 120mA max
for each)
7, Expansion
8 Module Locations
9 Spare Fuses
10 Keypad / Overlay
Header
12 Modbus DIP
Switch
13 Modbus
Terminals
14 Thermocouple 1
15 Thermocouple 2
16 Thermocouple 3
(optional)
17 4-20mA (or 1V-
5V) Level Input
18 4-20mA (or 1V-
5V) Pressure
Input
19 4-20mA Output 1
Category Description
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.
Programming Programming header (factory use only) for reprogramming the onboard
Control microcontroller.
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).
Inputs/Control DIP switches for user options configuration (see "DIP Switch Option
Settings" section on page 53).
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.
Expansion Locations for future expansion modules.
Power Spare 6.3A fuses for field servicing.
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.
Modbus/RS485 DIP switches for selecting termination options for the Modbus/RS485
communications cable
Modbus/RS485 Terminals for connecting a Modbus/RS485 communications cable. CSC400 is
a Modbus RTU slave in a 8N1, 9600 baud default configuration.
Inputs/Control Thermocouple 1 input terminal connections. Ensure proper polarity for
correct operation. Use ungrounded thermocouples.
Inputs/Control Thermocouple 2 input terminal connections. Ensure proper polarity for
correct operation. Use ungrounded thermocouples.
Inputs/Control Thermocouple 3 input terminal connections. Ensure proper polarity for
correct operation. Use ungrounded thermocouples.
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).
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).
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
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