6
2.3
B
ASIC PARAMETERS
Type
Nr
Characteristic
Inputs
Resistive
4
PT1000 type, range -25
…
+70
°
C
Analog
1
0-10V
Digital
5
Free potential contact
Outputs
Analog
6
0-10V / 2mA
Modulated
2
21V ±2VDC / 50mA
Relay
5
250VAC, 3A / Resistive load
Communication
RS485 serial port: 2 ports
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
When the
system works
properly
In an alarm
condition
E1
Water heater frost protection thermostat
closed
Freeze alarm
Electric heater alarm
closed
Hi temperature
E2
Inlet and outlet filter pressure switch
open
E3
Confirmation of supply fan operation, confirmation of
exhaust fan operation, confirmation of rotary
recuperator operation, supply fan pressure switch
closed
Engine alarm
E4
Cooling source alarm
open
Cooling source
alarm
E5
Enable operation / Service switch
open
Disable operation
PP
EPS signal
closed
Disable operation
