S&P ECOWATT PLUS CRHB 400 N, Manual

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18
EN
S4 position A B C D E F
VAV mode 0-10V Temperature RH (1) RH (2) CO2 (1) CO2 (2)
Full scale 10V 50°C 100% 100% 2000ppm 2000ppm
Minimum of
sensor
0V 0°C 0% 0% 0ppm 0ppm
Setpoint 5V 25°C 50% 60% 1100ppm 800ppm
Band 5V 4°C 10% 40% 800ppm 800ppm
Alarm 10V 28°C 70% 90% 1600ppm 1400ppm
Vreg_Lim_min 0V 2V 2V 2V 2V 2V
Vreg_Lim_max 10V 10V 10V 10V 10V 10V
NOTE: Specially designed to AIRSENS IAQ sensor range
Alarm row refers to air quality depending on the concentration sensor. In case of reaching the concentration level,
through Modbus communication, an alarm message will be activated (discrete inputs 10008, 10009 and 10010).
Any other adjustment not included in six modes described above must be made by means of external Modbus para-
metrization (see section 6.5.).
2. Set of analog input signal type depending of sensor features. This adjustment will be done with microswitch S2 (see
locations in section 4.2.).
S2
S2.1
OFF: AI1 analog input, 0-10V
ON: AI1 analog input, 4-20mA
S2.2
OFF: AI2 analog input, 0-10V
ON: AI2 analog input, 4-20mA
S2.3
OFF: AI3 analog input, 0-10V
ON: AI3 analog input, 4-20mA
5.4. MINIMUM / MAXIMUM
Operating mode where fan alternates between two pre-set speeds through normally opened voltage free contact (see
locations in section 4.2., J5 terminals). The factory set speeds correspond to maximum speed of 10V (100%) and mi-
nimum speed of 4V (40%). Values of these speeds can only be modifi ed using Modbus parametrization protocol (see
Modbus Map, holding registers 40073 and 40074).
6. OTHER FUNCTIONS
In addition to operation modes described in previous section, ECOWATT PLUS units allow other functionalities described
in following sections.
6.1. REMOTE STOP/START
Located in J3 terminals, they allow remote stop/start via normally open voltage free contact. The equipment is delivered
with a factory-made bridge that allows the equipment to run directly. Once jumper is opened, the fan will stop internal
readings and sending 0V to the motor. Despite this, control will continue to supply the motor with 230V.