Ultra Allround
Assembly, installation and operating instructions
25
Section of the printed circuit board
Description
Terminal block X2 (control voltage / fault alarm):
UC/GND 0-10 V DC signal for EC fan speed continuously variable
A+/B- External modbus connection for EC fan
f.e1/f.e2 potential-free motor alarm contact 30 V DC / 2 A
No fault -> contact closed
c.a1/c.a2 potential-free condensate alarm contact 30 V DC / 2 A
No fault -> contact closed
Terminal block X3 (damper switch-over control):
c/h–GND External contact for damper switch-over (heating / cooling
switch-over // open = heating mode)
com/no (K4) – Potential-free output contact (heating / cooling) 30 V
DC /2 A
Y1 - External valve control Y1: 24 V DC Open / Closed for heating /
cooling
Y2 – External damper control Y2: 24 V DC Open / Closed for air deflec-
tion
24 V-GND – Output contact 24 V DC
Terminal block X4 (valve / damper / condensate alarm connection):
(Valve) Valve actuator Y1 24 V DC Open / Closed
2-pipe version: Heating/cooling valve
(Damper) Damper actuator Y2 24 V DC Open / Closed
2-pipe version: Heating / cooling air deflection
(cp.alarm) Condensate pump alarm contact
Note: The valve (Y1) is actively closed in the event of a condensate
alarm.
No condensate pump: jumper factory-inserted!
Terminal block X5 (fan connection):
(UC/GND) 0-10 V signal
(B-/A+) Modbus signal
Terminal block X6 (fan fault connection):
(Fan error) Fan alarm input
Decoupled via K1; potential-free output via X2
fe1/fe2 ; 30 V DC /2
Содержание Ultra Allround
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