GEA Grasso M-Series User Manual

9.3.1 Overview of the operating modes
Modes Signal for …
Name Remark Start/Stop Capacity +/-
0 Service Oil pump by itself
Compressor motor blocked
1 Manual
+ Manual
Manual control via Touch Panel (TP) Manual Manual
2 Manual + Auto Manual Start/Stop via TP and full automatic local
capacity control
Manual Auto
3 Auto + Auto Full automatic start/stop and local capacity control Auto Auto
4 Remote
+ HW (cont)
Start/stop and capacity demand via digital contacts
(hardware) from a remote master controller. The GSC
TP derives from the continuous +/- signals the pulses
for capacity (indirect).
External External
continuous
5 Remote
+ HW (pulse)
Start/stop and capacity demand via digital contacts
(hardware) from a remote master controller. The mas-
ter also generates the +/- signals as pulses for control-
ling the slide capacity directly.
External External
pulses
6 Remote
+ HW (loc.
SW)
Start/Stop from a remote master controller via digital
contacts (hardware). The GSC TP controls the output
depending on a local setpoint (TP) and from this set-
point also automatically switches the product ON/OFF.
External
+ setpoint
deviation
Local
Setpoint
7 Remote
+ HW (ext.
SW)
Start/Stop from a remote master controller via digital
contacts (hardware). The GSC TP controls the output
depending on an external setpoint (analog input) and
from this setpoint also automatically switches the
product ON/OFF.
External
+ setpoint
deviation
Remote
Setpoint
8 Remote
+ Net (cont)
Start/stop and capacity demand via network from a
remote master controller. The GSC TP derives from
the continuous +/- signals the pulses for controlling the
capacity (indirect).
Network Network
continuous
9 Remote
+ Net (pulse)
Start/stop and capacity demand via network from a
remote master controller. The master also generates
the +/- signals as pulses for controlling the capacity
directly.
Network Network
pulses
Operating Manual | GEA Grasso M-Series
Screw Compressor Packages
Use, operation, control
GEA Refrigeration Germany GmbH | P_261511_1 | Generated 01.04.2015 67

GEA Grasso M-Series Specifications

General

Brand	GEA
Model	Grasso M-Series
Category	Air Compressor
Language	English