MAX300-RTG: Installation Manual Hardware Installation
48
Figure 23: KL4021 module
Figure 24: KL4022 Module
Both the KL4021 and KL4022 analog output terminals generate signals in the
range from 4 to 20mA. The power is electrically isolated and supplied to the
process level with a resolution of twelve bits. The KL4021 is the single-channel
variant particularly suitable for signals with electrically isolated ground potentials.
The KL4022 version combines two channels in one housing. In both cases, the run
LED gives an indication of the data exchange with the Bus Coupler.
Digital I/O
The Digital Output in the Digital I/O communications option controls the state of
relays the user can connect to external alarms, monitors, controllers or other
devices. The triggers controlling these relays can be various types of alarm
conditions or instrument parameters. A common relay type is single pole double
throw (SPDT) with contacts rated at 125VAC/30VDC with a maximum switched
current of 5A.
The Digital Input in the Digital I/O communications provides MAX300-RTG with
the ability to monitor digital input signals that conform to the “IEC 61131-2, type 1”
specification. A digital “0” is –3 to 5V and a digital “1” is 15 to 30V. The inputs are
supplied in individually configurable eight bit blocks.
To Next Page
Loading...