Danfoss ECL Apex 20 Data sheet
Data sheet
ECL Apex 20 controller
Description
ECL Apex 20
ECL Apex 20 The ECL Apex 20 is used in large district heating
applications. The product is designed and
produced by the company Saia-Burgess.
The ECL Apex 20 is a free programmable
controller (FPC / PLC) for temperature and
pressure control as well as monitoring of district
heating systems.
The ECL Apex 20 is operated by means of a PC.
Temperature input signals are based on Pt 1000
or 0 - 10 V.
Application
Example 1:
Pressure input signals are based on 0 - 10 V.
Activation of the motorized control valves is
based on 0 - 10 V signals. Activation of the
pumps is based on relay outputs.
The advantages of the ECL Apex 20 are among
others:
• Free programmable controller
• Flexible input and output configuration and
extension
• Flexible communication possibilities
• Onboard web server
The ECL Apex 20 is to be placed inside a panel.
© Danfoss | 2021.06
All the mentioned components (SF = flow meter, SP = pressure sensor, ST = temperature sensor, P = pump, M = motorized
control valve) are wired to the ECL Apex 20.
AI000086469417en-010502 | 1
Data sheet ECL Apex 20 controller
Application
Example 2:
All the mentioned components (SF = flow meter, SP = pressure sensor, ST = temperature sensor, P = pump, M = motorized
control valve) are wired to the ECL Apex 20.
Ordering ECL Apex 20 controller
Typ e Designation Code No.
ECL Apex 20 Controller
Extension modules
Typ e Designation Code No.
Saia-Burgess standard
modules
Saia-Burgess memory
module
Saia-Burgess ex tension
housing
Saia-Burgess PCD
MB Panel 7” TFT
*) To be purchased at the local Saia-Burgess representative at agreed conditions
Accessories
Typ e Designation Code No.
PG5 Programming Software.
*) Not supplied by Danfoss
(Saia-Burgess: PCD2.M5540 equipped with one G4 I/O module).
Supplied with the product:
• Batter y (CR 2032) for time back-up
• Installation guide
• Connectors (with numb ers) for power etc.
PCD2.E110 (input, 8 x digital)
PCD2.E165 (input, 16 x digital)
PCD2.A200 (output, 4 x relays, NO)
PCD2.A220 (output, 6 x relays, NO)
PCD2.W200 (input, 8 x 0 - 10 V.)
PCD2.W220 (input, 8 x Pt 1000 temperature sensor)
PCD2.W400 (output, 4 x 0 - 10 V)
PCD7.D3100E (display for insertion in the ECL Apex 20)
PCD7.R551M04 (flash memory, 4 MB) *)
PCD2.C2000
Use PCD2.K106, connection cable between ECL Apex 20 and extension housing
WVG A PCD7.D470W TPZ11 *)
To be purchased at a local Saia-Burgess representative at agreed conditions.
087B2506
*)
*)
*)
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AI000086469417en-010502
Data sheet ECL Apex 20 controller
Ordering (continued) Pt 1000 temperature sensors (1000 ohm / 0 oC)
Typ e Designation Code No.
ESMT Outdoor temperature sensor 08 4N1012
ESM-10 Room temperature sensor 08 7B116 4
ESM -11 Surface sensor 087 B116 5
ES MB-12 Universal sensor 087 B118 4
ESMC Surface sensor incl. 2 m cable 087N0011
ESMU -100 Immersion sensor, 100 mm, copper 087 B118 0
ESM U-250 Immersion sensor, 250 mm, copper 087 B1181
ESMU -100 Immersion sensor, 100 mm, stainless steel 087 B118 2
ESM U-250 Immersion sensor, 250 mm, stainless steel 087 B118 3
Technical data
Supply voltage
Must be a class 2 transformer (double isolated)
Ambient temperature Placed on ver tical surface:
Storage temperature -20 - 85 °C
Humidity 10 - 95% RH,
IP class IP 20
Enclosure, material PC / ABS
Mounting On 2 x top hat rails of each 35 mm width,
Data and clock backup Lithium bat tery CR 2032
Max. input / output 1024 (when PCD2.C2000 extension
Max. input / output modules 61 (G4 I/O module incl.)
Weight 0.95 kg + (5 modules x 0.04 kg) = 1.15 kg
- marking
in accordance with the standards
Software for programming The ECL Apex 20 is programmed by means of
the software PG5.
ECL Apex 20
24 V d.c., +25% / -20%,
min. 0.6 A
0 - 55 °C
Other positions: 0 - 40 °C
without condensation
(to be mounted in a protection panel)
mounted in parallel or with 4 x M4
screws
housings are used)
EMC (ElectroMagnetic Compatibility
Directive)
LVD (Low Voltage Directive)
RoHS (Restriction of Hazardous
Substances Directive)
Programming methods offered:
• S-Edit (instruction list)
• GRAFTEC (sequential function chart)
• FUPLA (function block diagram)
ECL Apex 20 controller,
description
G4 I/O module and numbering
of slots
AI000086469417en-010502
The ECL Apex 20 is delivered with a G4 I/O
module containing 4 connectors: X11, X12, X13
and X14:
Slot 0: Empty
Slot 1: Empty
Slot 2: Empty
Slot 3: Empty
Slot 4: X11, digital output (DO), 5 x relays NO
Slot 5: X12, digital input (DI), 10 x DI
Slot 6: X13a, analog output (AO), 3 x 0-10 V
X13b, analog input (AI), 5 x Pt 1000
Slot 7: X14, analog input (AI), 9 x 0-10 V
or 0-20 mA
Slots 0, 1, 2 and 3 can be used for additional
modules.
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