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1. Initial Instructions
1.1 General Description
The C4 is an extremely compact advanced SCR power
controller that provides a unique combination of per-
formance, reliability, and flexibility. The C4 multiple
zone SCR power controller manages both single phase
and 3-phase industrial heating load applications. Load
management options include: Up to 4 independently
controlled single phase loads or one 3-phase/3-leg
load (with or without an additional single phase load) or
up to two 3-phase/2-Leg loads.
Standard features: Output choices range from 30 kW
to 80 kW per unit or from 16 to 40 Amps per zone at
480 Vac (for higher amperages the C4X can be used);
Four universal main process inputs, two digital inputs,
two configurable alarm outputs, Mod-bus RTU/RS485
digital communications, DIN Rail or panel mountable.
Optional features: One or four Current Transform-
ers (input), four analog inputs, integral fuse holder (30
kW & 60 kW only), four configurable outputs, modular
Fieldbus Communication protocols including Modbus
RTU, Modbus TCP, Ethernet IP, EtherCAT, CANopen,
DeviceNet, Profibus, and Profinet. This new Chromalox
controller is the ideal PID and power control solution
for applications demanding high performance, con-
tinuous service, preventative maintenance information,
and increasing need for process data and information
for quality and process improvement analysis. Industry
markets such as, but not limited to:
• Packaging
• Plastics Processing; Extrusion; Thermforming; In-
jection Molding, Welding & Joining
• Semiconductor
• Material Finishing; Paint Booths;
• Textile
• Multiple zoned furnaces; Tunnel Ovens
• Food Processing
1.2 Features
• 30, 60, 80kW controller size capacity (refer to C4X
for higher amperages)
• Solid state relay control
• One or four current transformers
• Fuses-holder (option)
• 4 universal main inputs
• 4 heat/cool independent PID
• 4 main output internally wired to the SSR
• 4 auxiliary analog inputs (option)
• 4 configurable output (option): relay / logic / analog/
TRIAC
• 2 configurable relay alarm output
• 2 digital inputs
• Standard digital communication: Modbus RTU/
RS485
• Optional Fieldbus communication: Profibus DP,
CANopen, DeviceNet, Modbus RTU, Ethernet Mod-
bus TCP, Ethernet IP, EtherCAT, ProfiNET
• DIN rail mounting
• Integrated heat sink and fan
• cULus, CE
1.3 Product Inspection
Immediately after unpacking the unit and prior to in-
stalling, check the order code and the other data on
the label attached to the outside of the container and
write them down. If troubleshooting is necessary, you
will need to provide this data to a Chromalox customer
service representative.
Upon removing package, ensure that there is no physi-
cal damage to the controller during shipment, and that
the package also contains the “Configuration and Pro-
gramming” manual.
If there are signs of damage or if any parts are missing,
notify your Chromalox representative immediately.
Read through all installation sections in detail within
this document before installing the C4 on any piece of
equipment or in a control panel enclosure. Spacing re-
quirements must be honored for proper operation and
safety.
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