S&P ECOWATT PLUS CRHB 400 N, Manual

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15
EN
Element Terminals Description
J12
0V, +
(SLAVE) 0-10V regulation slave output to other equipment. By factory default, slave output will be same
as equipment regulation speed. Parameter only modifiable through Modbus communication.
J14
0V, D1, D0,
12V
Modbus RS485 communication connection and +12V power supply (300mA max.)
J15 D1, D0 Modbus RS485 communication connection
J17 - USB connector
S1 1, 2, 3, 4
1 – OFF: Constant pressure operation (COP) - (factory default)
ON: Constant airflow operation (CAV)
2 – No use
3 – OFF: Hardware parameterization (selector and switches) - (factory default)
ON: Parameterization via Modbus
4 – No use
S2 1, 2, 3
1 – OFF: AI1 analog input, 0-10V - (factory default)
ON: AI1 analog input, 4-20mA
2 – OFF: AI2 analog input, 0-10V - (factory default)
ON: AI2 analog input, 4-20mA
3 – OFF: AI3 analog input, 0-10V - (factory default)
ON: AI3 analog input, 4-20mA
S3 1, 2, 3
1 – OFF: Force cannel 1 Modbus communication - (factory default)
ON: Modbus communication channel selected (holding register 40001)
2 – OFF: Modbus communication parameters: 19200, even, 1stop bit - (factory default)
ON: Communication parameters according to Modbus modification (holding registers 40002
- 40003)
3 – OFF: Modbus network end impedance enabled - (factory default)
ON: Modbus network end impedance disabled
S4 - 16-position selector (0 – 9, A – F), operating modes and settings
BT1 -
CR2032 battery. Maintains the configured time when the equipment is not powered (necessary
in case of time schedule via Modbus)
F1 - Protection fuse (5x20, 6.3A, T)
D3 - Red LED that indicates motor alarm. Constant flashing when motor alarm is activated
D4 - Green LED that indicates main power. Fixed when powered.
D5 -
Green LED that indicates Modbus communication. On/Off sequence according to Modbus
protocol.
5. OPERATION MODES
ECOWATT PLUS units allow the following operating modes:
•
Constant pressure (COP) mode, by factory default, with modifi able setpoint parameters.
• Constant airfl ow (CAV) mode with modifi able setpoint parameters.
• Variable airfl ow volume (VAV) mode by installing an external sensor with 0-10V or 4-20mA analog signal.
• MIN/MAX mode.
Operating mode and setpoint setting selection are made by means of the microswitch S1.1 and the selector S4 (see
locations in section 4.2). The microswtich is ON/OFF type and the selector has 16 positions (0 – 9, A – F). Parameters
described below:
Element Position Function
S1.1
OFF COP operation mode - (factory default)
ON CAV operation mode