User manual

38 - UR4848 - User manual UR4848 - User manual - 39
16 c. de. Command Delay
Command delay (only in ON / OFF functioning). In case of servo val-
ve it also works in P.I.D. and represents the delay between opening
and closure of the two contacts
-180…+180 seconds (tenths of second in case of servo valve).
Negative: delay in switching o phase.
Positive: delay in activation phase.
Default: 0.
17
c. s.p. Command Setpoint Protection
Allows or not to modify the command setpoint value
free Modication allowed (Default)
Lock Protected
18 p.b. Proportional Band
Proportional band Process inertia in units (example: if temperature
is in °C)
0 ON / OFF
t.i. if equal to 0 (Default)
1-9999 [digit
3
] (degrees.tenths for temperature sensors)
19 t.i. Integral Time
Process inertia in seconds
0.0-999.9 seconds (0 = integral disabled), Default: 0.
20
t.d. Derivative Time
Normally ¼ of integral time
0.0-999.9 seconds (0 = derivative disabled), Default: 0.
21
t.c. Cycle Time
Cycle time (for P.I.D. on remote control switch 10 / 15 sec., for P.I.D.
on SSR 1 sec.) or servo time (value declared by servo-motor manu-
facturer)
1-300 seconds, Default: 10.
3
Display of decimal point depends on setting of parameter sen. and parameter d.p.
22 o.PoL. Output Power Limit
Selects max value for command output percentage.
0-100%, Default: 100%.
23
AL.1 Alarm 1
Alarm 1 selection. Alarm intervention is related to AL1
(See paragraph 11)
dis. Disabled (Default)
A. AL. Absolute alarm, referring to process
b. AL. Band alarm
H.d.AL. Upper deviation alarm
L.d.AL. Lower deviation alarm
A.c.AL. Absolute alarm, referring to command setpoint
st.AL. Status alarm (active in Run / Start)
cooL Cooling action
L.b.A. Status alarm “load control” (Loop Break Alarm). Example: status of
contactors / SSR or heating elements
24
A.I.5.0 Alarm 1 State Output
Alarm 1 output contact and intervention type
n.o. 5. (N.O. start) Normally open, active at start
n.c. 5. (N.C. start) Normally closed, active at start
n.o. t. (N.O. threshold) Normally open, active on reaching alarm
4
n.c. t. (N.C. threshold) Normally closed on reaching alarm
4
25 a1.re. Alarm 1 Reset
Alarm 1 contact reset type
are. Automatic reset (Default)
mre. Manual reset
mre.s. Manual reset stored. (keeps relay status also after an eventual
power failure)
4
On activation, the output is inhibited if the controller is in alarm mode. Activates only if alarm
condition reappers, after that it was restored.