CAN bus interface for one ready-to-plug-in refrigeration unit
PLI-IFC_V1.2.1_PI_2023-07_EN 1
Subject to technical changes
PLI-IFC
1 PLI-IFC
CAN bus interface for one ready-to-plug-in refrigeration unit
1.1 Front view
Fig. 1: Front view
1.2 Features
• CAN bus interface module for one ready-to-plug-in refrigeration unit
• Transparent representation of the parameters in FRIGODATA XP
• Automatic recognition of the connected refrigeration unit
• Monitoring of the connected refrigeration unit
• Alarms via bus
• Large data memory for temperature history
• Integrated real-time clock for correct time assignment of history data
• Installation on top-hat rail or wall installation
Version and validity of the documentation
Any versions not listed are special solutions for individual projects and are not described in detail in this document.
This document automatically ceases to be valid if a new technical description is issued.
Manufacturer: Wurm GmbH & Co. KG Elektronische Systeme, Morsbachtalstraße 30, D-42857 Remscheid
You can find more information on our website at www.wurm.de
Version Date
V1.2.1 and
higher
2023-07 Documentation status
CAN bus interface for one ready-to-plug-in refrigeration unit
2 PLI-IFC_V1.2.1_PI_2023-07_EN
Subject to technical changes
PLI-IFC
1.3 For your safety
Writing conventions
WARNING • Avoid the described hazard: otherwise, electric voltage represents a danger that could lead to
fatal or serious bodily injury.
CAUTION • Avoid the described hazard: otherwise it can result in minor or medium bodily injury or damage
to property.
Safety instructions
For safe operation and to avoid personal injury and equipment damage through operating error, al-
ways read these instructions, become familiar with the device, and follow all safety instructions on the
product and in this document, as well as the safety guidelines of Wurm GmbH & Co. KG Elektronische
Systeme. Keep these instructions ready to hand for quick reference and pass them on with the device
if the product is sold.
Wurm GmbH & Co. KG Elektronische Systeme accepts no liability in the case of improper use or use
for purposes other than the intended purpose.
WARNING DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Only operate the device with a suitable power supply.
• Never expose the device to moisture, for example due to condensation or cleaning agents.
• Take the device out of operation if it is faulty or damaged and is therefore compromising safe
operation.
• Do not open the device.
• Do not repair the device yourself. If the device requires repairs, send it in with an exact descrip-
tion of the fault.
CAUTION DAMAGE TO THE DEVICE IF HANDLED INCORRECTLY!
• The wiring of the device must be carried out only by qualified electricians.
• Use only the correct tools for all work.
• Check all wiring after connection.
• Take note of the maximum loads on all connections.
CAUTION FAULTS CAN OCCUR IF THERE IS ELECTROMAGNETIC INTERFERENCE!
• Always use shielded data cables and place them far away from power lines.
Target group This manual is intended for "service technicians".
Intended use
PLI-IFC CAN bus interface is used to connect a ready-to-plug-in refrig-
eration unit with Modbus to the CAN bus. In addition, the PLI-IFC inter-
face stores event lists and history data.
Wurm Infocenter paperless info
CAN bus interface for one ready-to-plug-in refrigeration unit
PLI-IFC_V1.2.1_PI_2023-07_EN 3
Subject to technical changes
PLI-IFC
1.4 Connection diagram
Fig. 2: Connection diagram
1.5 CAN bus RJ45 assignment (1, 2)
1.6 Modbus RJ45 assignment
1.7 LEDs
Pos. Assignment Pos. Assignment
1B/+ 5n.c.
2A/- 6n.c.
3n.c. 7n.c.
4n.c. 8n.c.
SShield
Pos. Assignment Pos. Assignment
1B/+ 5n.c.
2A/- 6n.c.
3n.c. 7n.c.
4n.c. 8n.c.
SShield
LED Status Colour Function
Status Permanent light Green Operation
Flashing Green Search function is active
Permanent light Orange Last fault was indicated and has not yet been
acknowledged
Flashing Orange At least 1 fault is active
Permanent light Red Bootloader is active
CAN bus TxD Flashing Green Data are being sent over the CAN bus
CAN bus RxD Flashing Green Data are received over the CAN bus
Modbus TxD Flashing Green Data are sent over the Modbus
Modbus RxD Flashing Green Data are received over the Modbus
VWDWXV
/('
12345678
12345678
CAN bus interface for one ready-to-plug-in refrigeration unit
4 PLI-IFC_V1.2.1_PI_2023-07_EN
Subject to technical changes
PLI-IFC
1.8 Installing the module
This module is designed for indoor top-hat rail and wall installation. The module can be installed both
in the control cabinet and on the back of the refrigeration unit (not accessible during operation).
Fig. 3: Top-hat rail installation and dimensions for wall installation in mm
Top-hat rail installation
1. (A) Place the module with the leading edge at an acute angle to the top-hat rail.
2. (B) Push the module down onto the top-hat rail.
The module snaps into place with the fastening safety catch (a) on the top-hat rail.
1.9 Technical data
Power supply Via an external power supply unit: 24V=, +/-10%
Power consumption 10W
Max. current consumption 420mA
Display 1 x red/green/orange LED, status
4 x green LED, Modbus and CAN bus data traffic
CAN bus communication 3-wire CAN bus interface with integrated power supply, not gal-
vanically isolated, 2 x RJ45 socket
Modbus communication 2-wire Modbus interface with integrated power supply, not gal-
vanically isolated, 1 x RJ45 socket
Housing ABSFR plastic
Dimensions (W x H x D) 71 x 90 x 32mm
Fastening Top-hat rail TH 35-15 or TH 35-7.5 (DIN EN 60715)
Wall installation (slot hole): screw diameter Ø4mm, screw head
Ø8mm
Ambient temperature Operation: 0...+55°C, storage: -25...+70°C
Max. relative humidity 90%Rh
Degree of protection IP20
Weight About 100g
CE conformity - 2014/30/EU (EMC Directive)
- 2014/35/EU (Low Voltage Directive)
RoHS II
A
B
/
