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7. Compressor module (VSD)
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7. C ompr ess or module (VSD)
7.1 Functions
The compressor module (VSD) is used to connect any
speed regulated compressor to the GD Connect 12.
The status of the compressor is detected by analog and
digital inputs on the compressor module and sent to the
GD Connect 12 via its RS485 interface.
Speed regulation is obtained by manipulating the line
pressure signal by means of the analog output. This is
connected to the analog input of the compressor control
which is normally connected to the line pressure
sensor.
The appropriate command is transmitted via the RS485
interface to the compressor module and is executed by
means of the digital and analog outputs.
7.2 Technical data
Required compressor drive
Motor type:
Three-phase asynchronous motor
Rating current: max. 500A
Electrical connection
Voltage:
110..230V AC/DC +/-10%
Power:
1VA
Digital inputs
Voltage:
24..230V AC/DC +/-10%
Note which terminals are used
"Operation"
Compressor available or
collective fault signal
Terminals 6 / 7 / 8
"Warning"
Compressor sends a warning signal
Terminals 9 / 10 / 11
"Load"
Compressor is on load
Terminals 12 / 13 / 14
Digital outputs
"DO-1"
Optional use
Terminals 1 / 2
"DO-2"
Optional use
Terminals 3 / 4
Type:
Potential-free relay outputs
(change-over contacts)
Load:
max. 240V / 1A
Analog input AI-1
Type:
4..20mA / 0..10V / 0..5V
(depending on jumper)
Function: Detection
of
line
pressure
at the compressor
Analog output AO-1
Type:
4..20mA / 0..10V / 0..5V
(depending on jumper)
Burden:
Active sensor:
94 Ohm
Passive sensor: 650 Ohm max.
Function:
Manipulated line pressure
at the compressor
Connection to the GD Connect 12
Interface: RS485
Cable type:
2x2x0.5..1.5mm²
twisted pair and screened
Wiring length:
max. 1200m
Address:
Adjustable from 1..12 by DIP switches
Bus termination: 120 Ohm
Switchable by DIP switches
Ambient temperatures
Operation:
0°C .. 55°C
Storage:
-25
.. 75°C
EMC conformity
Immission:
DIN EN 61000-6-3
Immunity:
DIN EN 61000-6-2
Dimensions (W x H x D)
100 x 110 x 70 mm
Type of construction / Protection
Plastic housing / IP30
Mounting
DIN rail TS35