Evco c-pro nano RACK User Manual download pdf (Page 61)

C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL

Page 61

6.5.2 Neutral zone adjustment

This adjustment implies the definition of a neutral zone in which no decision of activation or deactivation is

made, which means that there will be no requests for breakaways of any devices.

The parameters relative to the first circuit are the following:

- SFC1 = Setpoint fans (SP)

- PF14 = Type of adjustment = 1

- PF18 = Neutral Zone (NZ)

- PF19 = Differential outside the neutral zone (diff)

- PF20 = Time of turn-on/shutdown (ToutNZ)

Outside the neutral zone, the requests for turn-on or shutdown of the configured fans will follow this logic:

- Turn-on: when the discharge pressure exceeds the threshold value setPoint + Neutral Zone

- Shutdown: when the pressure becomes less than the setPoint

In this adjustment, the neutral zone is found entirely to the right of the setPoint.

As you can see from the figure, the adjustment implies the setting of two times, within which, depending on the

zone, the requests for turn-on and shutdown of the various steps must be managed to ensure the establishment

of proper time intervals.

If we are in the shutdown zone, every shutdown request must wait for ToutNZ seconds before it is fulfilled.

Instead, in the case of the turn-on zone, every turn-on request will have to wait for ToutNZ seconds before it is

fulfilled.

6.5.3 Sideband adjustment with inverter

This check adds an inverter adjustment to the normal sideband adjustment; in order to do this, it is necessary to

set some parameters relative to the inverter device that will be used, besides activating its use.

The parameters relative to the first circuit are the following:

- SPF1 = Setpoint fans (SP)

- PF14 = Type of adjustment = 0

- PG42 = Inverter activation

- PF24 = Differential inverter (DI)

- PF25 = Inverter offset with respect to the suction setPoint (OFSI)

- PF26 = Minimum value of inverter (MinI)

- PF27 = Time of speedUp

SP SP + Zone

ToutNZ ToutNZ

Neutral zone

Switching on Switching off

Discharging

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 81 82

No comments

Evco c-pro nano RACK User Manual Page 61