Rack and condenser controller with operating modes for compressors with FC
DCC-BL_V1.3.0_PI_2020-04B_EN 1
Subject to technical changes
DCC-BL
1 DCC-BL
Rack and condenser controller with operating modes for compressors with FC
1.1 Front view
Fig. 1: Front view DCC-BL
1.2 Features
• Different operating modes for operating different types of compressor rack
4 relays for controlling:
• equally or differently graduated compressors
• compressors with 1 to 4 steps
• with or without cylinder lift
1 voltage output for controlling:
• 1 constant compressor
• Can be extended with 4 switching outputs with an additional DCC-BL
• Compressor and rack downtime monitoring
• Integrated operating hours and switching cycles counter per compressor
• Optimised base load change and forced base load change of the compressors
• Compressor oscillation protection according to run time and switching frequency
• Peak load shedding and fast return by digital input
• Dynamic flow delay and return flow delay
• Evaporation temperature setpoint shift by digital input, CAN bus and enthalpy
• Winter start function
• Suction gas monitoring
• Rack control by voltage input
• Manual operation of compressors
• Integrated condenser control: constant by voltage output or stepped by voltage output with ADC
• Condensation temperature setpoint shift by digital input and outside temperature
• Cyclical forced start-up for condenser fans
• Night limit for condenser fans
• Emergency operation for rack and condensation control
• Support for higher baud rates on the C-BUS
• Can be locked to prevent unwanted parameter adjustment
• Plain text name for each parameter on the display, language selectable
• Unique parameter identification with Quicklinks
• 1-finger operation
• Direct connection of a CAN-USB to the service socket
• Connection to the Wurm system via a Wurm CAN communication bus (C-BUS) and
FRIGODATA XP
Rack and condenser controller with operating modes for compressors with FC
2 DCC-BL_V1.3.0_PI_2020-04B_EN
Subject to technical changes
DCC-BL
1.3 Safety instructions
Writing conventions
WARNING • Avoid the described hazard: otherwise, electric voltage poses a hazard that could lead to death
or serious bodily injury.
CAUTION • Avoid the described hazard: otherwise minor or medium bodily injury or damage to property will
result.
For your safety
For safe operation and to avoid personal injury and equipment damage through operator error, always
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 case of improper use or use for
other than the intended purpose.
WARNING DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Switch off the power to the entire plant when installing, wiring or removing. Otherwise a mains
voltage and/or external voltage may still be present even if the control voltage is switched off.
Always remove both power plugs (L and N).
• Only qualified electricians are permitted to wire the device.
• Use only the correct tools for all work.
• Check all wiring after connection.
• Take note of the maximum loads on all connections.
• 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
description of the fault.
CAUTION ELECTROMAGNETIC INTERFERENCE CAN CAUSE FAULTS!
• Use only shielded data lines and place them far away from power lines.
Target group This manual is intended for "service technician" personnel.
Intended use The DCC-BL is a rack and condenser controller with operating modes
for compressors with or without frequency converters.
Wurm Infocenter paperless info
Rack and condenser controller with operating modes for compressors with FC
DCC-BL_V1.3.0_PI_2020-04B_EN 3
Subject to technical changes
DCC-BL
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.
1.4 Connection diagram
Fig. 2: DCC-BL connection diagram
Version Date
V1.3.0 and higher 2020-04B Documentation status
Pos. Designation Function
1C-BUS interface Data communication (H = CAN high, S = shield, L = CAN low)
2Service socket For connecting a CAN USB adapter
3ADSP No function yet
4Output relays K1...K4 Compressor connection, depending on operating mode, float-
ing contact, 230V~, 4(2)A
5Power supply L 230V~/50Hz
6X-tra interface No function yet
7Power supply for N Neutral conductor
8Digital inputs Inputs for floating contacts: setpoint increase (ΔT0|ΔTC), fast
return (FR), peak load shedding (I and II)
9Analogue output Uout2 Fan control (direct or through ADC module)
10 Pressure sensors Suction pressure and condensation pressure (DAR 7...120)
11 Analogue output Uout1 Constant compressor connection
12 Sensor input S2 or
0...10V input
Suction gas temperature sensor (TRK277) or output control in
the voltage control operating mode
13 Sensor input S1 Outside temperature sensor (TRK277)
14
7
9
5
8
10
2
GND
Uout1
GND
P
0
P
c
I
U+
Uin
S1
22 23 24 25 26 27 28 29
21
38 37 36 35 34 33 32 3139
4321
22 23 24 25 26 27 28 29
21
38 37 36 35 34 33 32 3139
DCC-BL
Frigoentry Blueline
2sec.
74451213
d
c
GND
FR
N
ΔT T
0 C
Δ
L
K1
K2
K3
K4
Service
ADSP
H
0V
S
L
18 19
17161514131211
Uout2
GND
II
U+
S2
11
1213
6
3
Rack and condenser controller with operating modes for compressors with FC
4 DCC-BL_V1.3.0_PI_2020-04B_EN
Subject to technical changes
DCC-BL
1.5 Installing the device
This device is designed for top-hat rail installation. The housing has standard dimensions according
to DIN 43880 and is also suitable for operation in fuse boxes and distribution cabinets.
The devices can be positioned immediately adjacent to one another without gaps.
WARNING DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Switch off the power to the entire plant before installing. Otherwise, mains voltage and/or
external voltage may still be present, even if the control voltage is switched off. Always remove
both power plugs (L and N).
The entire plant must be free of voltage.
1. (A) Place the device with the leading edge at an acute angle to the top-hat rail.
2. (B) Push the device downwards onto the top-hat rail.
The device snaps into place with the fastening safety catch (a) on the top-hat rail.
You can now connect the device.
Fig. 3: Top-hat rail installation
1.6 Technical data
Power supply 230V~, +10% / -15%, max. 9VA
Display 1 x display with plain text display
2 x green LEDs, C-BUS data traffic (CAN Tx, CAN Rx)
C-BUS communication 3-wire CAN bus interface with integrated power supply,
galvanically isolated, separate service socket
Expansion module
communication
Interface for connecting X-tra module
Pressure sensors For p0 and pc (corresponds to 4...20mA):
• DAR 7 (-0.5...7bar)
• DAR 25 (0...25bar)
• DAR 40 (0...40bar)
• DAR 60 (0...60bar)
• DAR 120 (0...120bar)
Temperature sensor TRK277/7 PLUS, TRK277/G2, DGF
(T2015, T3000, TF201/TF231, K243)
Control input 0...10V= (for output control in voltage control operating mode)
or alternatively temperature sensor TRK277
Digital inputs 4 x floating
Output relays 4 x normally open contacts, 230V~, 4(2)A, rated voltage 230V~
Analogue outputs 2 x 0...10V=, non-floating, max. load 10mA
Real-time clock Power reserve
Monitoring system Monitoring of data memory and connected sensors
Dimensions (W x H x D) 106mm x 90mm x 58mm (DIN 43880)
Fastening Top-hat rail TH 35-15 or TH 35-7.5 (DIN EN 60715)
Ambient temperature Operation: 0...+55°C, storage: -25...+70°C
Weight About 320g
CE conformity - 2014/30/EU (EMC Directive)
- 2014/35/EU (Low Voltage Directive)
EAC conformity - TR CU 004/2011
- TR CU 020/2011
RoHS II
Valid from Version 1.3.0
A
B
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1
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2
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3
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4
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