Grasso
Refri
eration Division
GRASSO SYSTEM CONTROL
01.2003/0 638660E_chapter5.doc Kap.5 - 7
5.4 Description of the periphery modules
The periphery modules are the link between the GSC, the compressor unit, the power panel and the customer.
5.4.1 Periphery bus coupler
As link between the PLC and periphery modules a periphery bus coupler is used (see figure 5.5). The address
selector must be set to address 11 (1 x1 + 1 x10).
Figure 5.5: Beckhoff periphery bus coupler (BK3120)
5.4.2 Digital input terminal
The KL1408 digital input terminal acquires the binary control signals from the process level and transmits them,
in an electrically isolated form, to the higher-level automation unit. Each Bus Terminal contains eight channels
which indicate their signal state by means of light emitting diodes.
Figure 5.6: Digital input terminal with 8 channels
To Next Page
Loading...
