User manual

26 - URDR0001 - User manual
• Parameter61 d G t .i .
NB: Settings on this parameter are available only if co n t. or p r. cY . are selected
on parameter 59
op.mo.
st.st.
: Start / Stop; operating on digital input the controller switches alterna-
tively from start to stop;
rn.n.o. : Run N.O. Controller is in start only with closed input;
rn.n.c. : Run N.C. Controller is in start only with open input;
L.c.n.o. : With closed input allows to lock the reading of sensors;
Lc. n . c. : With open input allows to lock the reading of sensors;
tune : Enables / disables Tuning function if parameter 57 tune is selected as
man. ;
a.ma.i. : If parameter 60 au.ma. is selected as en. or en .st. controller switch
from automatic to manual functioning;
a.ma.c. : If parameter 60 au.ma. is selected as en. or en .st. URDR works in
automatic mode if input is open or in manual mode if input is closed.
7.13 Dual Action Heating-Cooling
URDR is suitable also for systems requiring a combined heating-cooling action.
Command output must be congured as Heating P.I.D. (
Act. t. = HEAT and
with a
P. b . greater than 0), and one of the alarms ( A L .1 , AL. 2 or AL. 3 ) must be
congured as
co o L.
Command output must be connected to the actuator responsible for heat, while
the alarm will control cooling action.
Parameters to congure for the Heating P.I.D. are:
Act. t. = HEAT Command output type (Heating);
P. b . : Heating proportional band;
t.i : Integral time heating and cooling;
t.d. : Derivative time heating and cooling;
t. c. : Heating time cycle.