Basic Parameters; Standard Controller Inputs And Outputs - Ventair CU24V1 Operation Instruction Manual

2.3 B
ASIC PARAMETERS
Type
Resistive
Inputs
Analog
Digital
Analog
Outputs
Modulated
Relay
RS485 serial port: 2 ports
Communication
Distance: up to 50m
Communication protocol MODBUS
2.4 S
TANDARD CONTROLLER INPUTS AND OUTPUTS
G0, G Power supply: 24 VAC ± 10%, 50/60 Hz, input: 6VA (outputs P1, P2 unloaded)
M System ground voltage
B1-B4 Resistance inputs PT1000
E1-E5 Potential-free resistance inputs
X1 Analog input 0-10V
Q1 - Q4 Relay output – normally open
DA Relay output – 24 V
U1-U2 Relay output – 230 V
Y1-Y6 Voltage outputs 0-10 V DC
P1, P2 24 V DC modulated outputs; for continuous regulation of electric heaters. Controlled
devices should be connected between P1 (+) and ground M (-), or P2 (+) and ground M (-)
A1, B1 Serial interface RS485 Nr. 1
A2, B2 Serial interface RS485 Nr. 2
Digital outputs
Water heater frost protection thermostat
E1
Electric heater alarm
E2 Inlet and outlet filter pressure switch
Confirmation of supply fan operation, confirmation of
E3 exhaust fan operation, confirmation of rotary
recuperator operation, supply fan pressure switch
E4 Cooling source alarm
E5 Enable operation / Service switch
PP EPS signal
Nr Characteristic
4 PT1000 type, range -25 ... +70 °C
1 0-10V
5 Free potential contact
6 0-10V / 2mA
2 21V ±2VDC / 50mA
5 250VAC, 3A / Resistive load
When the
In an alarm
system works
condition
properly
closed Freeze alarm
closed Hi temperature
open
closed Engine alarm
Cooling source
open
alarm
open Disable operation
closed Disable operation
6