Universal Control Unit [Draft Copy - Not released for production]

CX - Control Module

The core-1-CX module is a basic PLC control unit, made of a compact CPU, with web server, a Power Supply for internal use, CLASS 2 Power Supply for powering the field I/O devices, IE Switch, 6 digital inputs (24VDC), 4 digital outputs (Dry contact, 1/3HP @220VAC), RS485 port (protocol configurable).
For the field connections, spring clamp terminal blocks are used (required a 3mm flat screwdriver, shipped with the module).
Default configuration Profinet IO-Device.
It can be configured as Profinet IO-Controller, modbus RTU, or Master, or combination of these.

CX - Control Module

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CX - Control Module



  • Process Controller
  • VFD control via Modbus
  • Pump/Lift station controller

CX - Control Module


The Following hardware options are available for this module:

  • Touch Panel 4", 7", or 9"
  • CPU model 12, 14, 15, or 17
  • UPS 24VDC with 1.2Ah battery
  • Additional Class 2 Power Supply 24VDC / 3.7A
  • Communication card: RS-232C - Fee ASCII
  • Communication card TS IE ADV (remote service)
  • Communication card: AS-interface
  • Marine use
  • Material of the Enclosure
  • Side of door hinges
  • Custom additions

1.1 General technical specifications

Specification Value Observations
Installation Location Indoors/Outdoors Without Touch Panel
Indoors With Touch Panel
Mounting position Vertical Wall Mounted
Hinges On left side Optional right side
Enclosure 24" [H] x 24" [W} x 8" [D] Plus Mounting Lugs
   Material Carbon Steel 16 ga body / 16 ga door
   Colour RAL 7035 Light Gray
Degree of protection (UL) Type 4 Standard
Type 4X Optional
Cooling Convection No additional cooling required
Operating temperature 0 – 40ºC Ordinary location
Transport and storage temperature -10ºC to +50ºC
Installation altitude Up to 1,000 m No restrictions

1.2.1 Power supply input

Specification Value Units Observations
Voltage range 85 to 264 VAC
Line frequency 47 to 63 Hz
Input current 300 mA at 120 VAC
150 mA at 240 VAC
Inrush current (max.) 20 A at 264 VAC
Isolation (input power to logic) 1500 VAC
Ground leakage, AC line to functional earth 0.5 mA max.

1.2.2 Power supply output

Specification Value
Class 2 Output Regulated, DC voltage
Rated voltage 24 V
Total tolerance, static ± 3%
Static line regulation, approx. 0.1%
Static load regulation, approx. 0.2%
Residual ripple peak-peak, max. 200 mV
Residual ripple peak-peak, typ. 90 mV
Spikes peak-peak, max. (bandwidth, approx. 20 MHz) 300 mV
Spikes peak-peak, typ. (bandwidth, approx 20 MHz) 60 mV
Output voltage can be adjusted No
Response when switching on/off Overshoot of Ua approx. 1%
Starting delay, max. 1.5 s  
Voltage rise, typ. 500 ms
Rated current (la rated) 3.7 A
Output active power/typical 89W
Short-time overload current / for a short circuit in operation / typical 5A
Can be connected in parallel to increase the power ratin No

1.3 CPU

CPU Features Value Units Observations
User memory 30 Kbytes Work
10 Kbytes Retentive
Bit memory (M) 4096 bytes
High-speed counters 4 max. configured
  ●100/*80 kHz
Time delay interrupts 4 total with 1 ms resolution
Cyclic interrupts 4 total with 1 ms resolution
Real time clock accuracy +/- 60 seconds/month
Real time clock retention time 20 days typ./12 days min.
(maintenance-free Super Capacitor)
Boolean 0.08 μs/instruction
Move Word 1.7 μs/instruction
Real math 2.3 μs/instruction
Blocks Type OB, FB, FC, DB
Size 30 Kbytes
Quantity Up to 1024 blocks total (Obs + FBs + FCs + DBs)
Address range for FB, FC, DB: 1 to 49999
Nesting depth 16 from the program cycle to startup OB
OBs Program cycle Multiple
Startup Multiple
Time-delay interrupts 4 (1 per event)
Cyclic interrupts 4 (1 per event)
Hardware interrupts 50 (1 per event)
Time error interrupts 1
Diagnostic error interrupts 1
Time of day Multiple
Status 1
Update 1
Profile 1
Timers Type IEC
Quantity Limited only by memory size
Storage Structure in DB, 16 bytes per timer
Counters Type IEC
Quantity Limited only by memory size
Storage Structure in DB, size depends upon count

1.5 Communications

Type Industrial Ethernet
Data rates 10/100 Mb/s
Isolation (external signal to PLC Logic) Transformer isolated, 1500 VAC, for short term event safety only logic)
Cable type IE CAT5e shielded / 85m max lenght between segments
Number of ports 3
Type RS485
Data rates 300, 600, 1.2k, 2.4k, 4.8k, 9.6k, 19.2k, 38.4k, 57.6k, 76.8k, 115.2k bps
Isolation 500 VAC, 1 minute
RS485 signal to chassis ground
RS485 signal to CPU logic common
Cable type Shielded / 1,000 m max lenght
Number of partners 1 to 30
Protocol Free ASCII, Modbus Master, Modbus RTU
Type AS-i
Data rate 16,700
Isolation 500 V
Number of AS-i slaves (maximum) 62
Type PROFIBUS (DP Master or DP Slave)
Data rate 9.6 kbps to 12 Mbps
Isolation 710 VDC for 1 minute
PROFIBUS signal to chassis ground
PROFIBUS signal to CPU logic common

1.6 Digital Inputs

Specification Value Units Observations
Number of inputs 4
Max. addressable With optional I
Rated voltage 24 VDC at 4 mA, nominal
Continuous permissible voltage 30 VDC max.
Surge voltage 35 VDC for 0.5 sec.
Logic 1 signal (min.) 15 VDC at 2.5 mA
Logic 0 signal (max.) 5 VDC at 1 mA
Isolation (field side to logic) 500 VAC for 1 minute
Isolation groups 1
Filter times 0.1, 0.2 , 0.4, 0.8, 1.6, 3.2, 6.4, 10.0, 12.8, 20.0 us settings
0.05, 0.1, 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 10.0, 12.8, 20.0 ms settings
HSC clock input rates (max.) 100/80 kHz
Number of inputs on simultaneously 4
Cable length (meters) 500 m shielded
300 m unshielded
50 m shielded for HSC inputs

1.7 Digital outputs

Specification Value Units Observations
Number of outputs 2
Max addressable With optional outputs
Type Relay, dry contact
    UL Horsepower and Pilot duty ratings
Ratings “Motor Load” Single phase 1/3 HP 110-120; (7.23 FLA)
¾ HP 220-240; (6.9 FLA)
Pilot Duty B300 – R300 277 VAC
A300-R300 30 VDC
Contact configuration 1 CO (SPDT)
Rated current/Maximum peak current 16 A
Rated voltage/Maximum switching voltage 250 V AC
Rated load AC1 4,000 VA
Rated load AC15 750 VA 230 VAC
Single phase motor rating 0.55 kW 230 VAC
Breaking capacity DC1:30/110/220 V 12/0.5/0.15 A
Minimum switching load 300 (5/5) mW (V/mA)
Standard contact material AgNi
Mechanical life AC/DC 10 · 106 cycles
Electrical life at rated load AC1 100 · 103 cycles
Operate/release time 15/5
Dielectric strength between open contacts 1,000 V AC
Pulse Train Output rate Not recommended
Behavior on RUN to STOP Last value or substitute value (default value 0)
Cable length (meters) 500 m shielded, 150 m unshielded

1.4 Touch Panel (Optional)

Size 4.3" 7.0" 9.0"
Actice display area 95 x 53.9 mm 154.1 mm x 85.9 mm 198 mm x 111.7 mm
Type LCD TFT LCD TFT with extended viewing angle
Resolution 480 x 272 pixels 800 x 480 pixels
Possible colors 65536 65536
Brightness control Yes Yes
Backlighting LED LED
Half Brightness Life Time (MTBF** ) 20,000 h 20,000 h
Pixel error class in accordance with ISO 9241 -307 II II

* Via Control Panel: Minimum to 100
** MTBF: Operating hours after which the maximum brightness is reduced by half compared to the original value. MTBF is increased by using the integrated dimming function, for example time-controlled via screen saver or centrally via PROFlenergy.

Type Touch screen (analog resistive)
Function keys 4 8
Labelling strips Yes Yes
Features Value
Tags 800
Number of discrete alarms 1000
Screens 250
Recipes 50
Number of logs 2
Number of log entries 10,000
Trends 25

1.8 Standard Compliance


System design conforms with the following standards and test specifications. The test criteria for the automation system are based on these standards and test specifications.

Underwriters Laboratories Inc. complying with:

● Underwriters Laboratories, Inc : UL 508A Listed (Industrial Control Panels)