Carel compactSteam, User Manual

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20
ENG
“compactsteam” +0300092IE - rel. 1.3 - 16.08.2021
3.12 RS485 supervisor card (standard for
P/Ns CH***N2003)
Fig. 3.ab
Description of connections on the RS485 card
Fig. 3.ac
The RS485 card is used for communication with a supervisor using the
ModBus protocol. For the list of variables, see the table below.
Caution:
• for model CH004N0003, the CHK4850000 accessory is required
• for RS485 connections in household (IEC EN 55014-1) and residential
(IEC EN 61000-6-3) environments, use shielded cable (with shield
connected to PE both on the terminal and controller ends), maximum
length specifi ed by the EIA RS485 protocol, equivalent to European
standard CCITT V11, using AWG26 twisted pair cable; the input
impedance of the 485 stage is 1/8 unit-load (96 kOhms).
3.12.1 Parameter table
DESCRIPTION TYPE R/W CAREL
ADD MODBUS
ADD DEFAULT MIN MAX UNIT VOLATILE
Humidifi er ready (no alarms) DIGITAL R 11 11 0 0 1 -
Anti-foam wash DIGITAL R 12 12 0 0 1 -
Flag indicating the fi rst 50 operating hours DIGITAL R 26 26 - 0 1 -
Unit disabled via remote (display shows -) DIGITAL R/W 28 28 0 0 1 YES
0 = humidistat - 1 = 0-10 V controller (set to 0 if control via super-
visor and set the % of production using parameter PO) INTEGER R/W 12 267 0 0 1 NO
Maximum production (PO) INTEGER R/W 13 268 100 20 100 % NO
Proportional hour counter INTEGER R 14 269 - 0 - hour -
Real hour counter INTEGER R 19 274 - 0 - hour -
Days of inactivity before wash INTEGER R/W 50 305 3 0 10 NO
Select protocol
0=CAREL
1-24 = MODBUS (see table of Modbus values) INTEGER R/W 52 307 0 0 24 NO (unit power off
neededf )
Alarm identifi cation (see table) INTEGER R 83 338 0 0 65535 -
Display current input ANALOGUE R 16 16 - 0 14.5 A -
Production in kg/h ANALOGUE R 17 17 - 0 4.5 kg/h -
Tab. 3.j
3.12.2 Alarm table
(16-bit multi-bit variable number 83 Carel, 339 Modbus)
BIT NUMBER DESCRIPTION ALARM CODE
1 MAINTENANCE WARNING
(rated current not reached) E6
2 DRAIN ALARM E5
3 FILL ALARM E4
4 MAINTENANCE WARNING (perc. hour counter >
600) E6
5 HIGH CURRENT ALARM E1
6 PARAMETERS NOT DOWNLOADED ALARM E0
7 NOT USED
8 LOW PRODUCTION WARNING E2
9 FOAM WARNING E7
10 END OF CYLINDER LIFE ALARM E8
11 NOT USED
12 NOT USED
13 NO VOLTAGE-CURRENT CONFIGURATION
WARNING EH
Tab. 3.k
3.12.3 Modbus table
To avoid malfunctions, disable any hardware fl ow control on the
supervisor application level
TABLE OF MODBUS VALUES (C7) TYPE BAUD RATE
0 CAREL 19200
1 MODBUS 8,N,2 19200
2 MODBUS 8,N,1 19200
13 8,N,2 9600
14 8,N,1 9600
Tab. 3.l