Elotech R 2000 - 431, Operating Manual

Page: 19 / 24

Manual R2000-43-E Release: 1.03 © Elotech GmbH Page 19/24
XIII. Parameter Level, individual selectable for zones 1...4
Select zone “n” and press „P“ - and „E“ - key appr. 1 sec.
Display
Parameter Display
"Process" „Set“
Y
valid output ratio -100...0...100 % The output ratio shows the momentary calculated ratio.
It cannot be altered. The display is in percent of the installed
performance capability for heating or cooling.
Output ratio for cooling is shown as a negative value.
1Y.Hi
output ratio limit 0...100 % (ex works: 100)
„heating“ Limitation of the output ratio is only necessary when:
the heating or cooling energy supply is grossly over-
dimensioned compared to the power required, or
to turn off a control output (setting = 0%).
under normal circumstances no limitation is needed (setting = 0%).
the limitation becomes effective, when the controllers’ calculated
output ratio is greater than the maximum permissible (limited) ratio.
Warning!
The output ratio limitation does not work during autotune.
2Y.Hi
output ratio limit 0...100 % (ex works: 100)
„cooling“
1 P
„heating“ OFF; 0,1...100,0 % (ex works: 3,0)
prop. band (P) If „ 1 P “ = OFF (control action: on-off, without feedback)
next parameter: „ 1 Sd “.
1 d
„heating“ OFF; 1...200 secs (ex works: 30)
rate (D)
1 J
„heating“ OFF; 1...1000 secs (ex works: 150)
reset (I) Normally the controller works using PD/I control action.
This means, controlling without deviation and with practically
no overshoot during start-up.
The control action can be altered in its structure by making the
following adjustments to the parameters:
a. no control action, on-off (setting P = OFF)
b. P-action (setting D and I = 0)
c. PD-action (setting I = 0)
d. PI-action (setting D = 0)
e. PD/I modified PID-action
1 C
„heating“ 0,5...240,0 secs (ex works: 10,0)
cycle time The switching frequency of the actuator can be determined
by adjusting the cycle time. This is the total time needed for the
controller to switch on and off once.
a) Relay outputs: cycle time > 10 secs
b) Bistable voltage outputs: cycle time 0,5...10 secs
1 Sd
„heating“
Control sensitivity Only if: 1 P = Xp = OFF (On-off action, without feedback)
OFF; 0,1...80,0 °C (ex works: 0,1)
OFF; 0,01 ... 8,00 °C (ranges with dec.point )
Sd = 10,0
on
-5,0 +5,0 off
SETPOINT PROCESS VALUE