Relay Control / PC Control

Function

Relay Control	PC Control
Some complicated control by using many relays	Any complicated control by changing program

Control Variability

Relay Control	PC Control
No way other than changing the actual wiring	Freely universal by changing program

Reliability

Relay Control	PC Control
Problematic for long run due to contact failure and lifetime	Highly reliable due to use of semiconductor

Applicability

Relay Control	PC Control
Not applicable to any other purpose	Freely applicable to any purpose by changing program

Expandability

Relay Control	PC Control
Difficult since addition and modification are required	Freely expandable up to its maximum capacity

Maintenance

Relay Control	PC Control
Checks and replacements are required periodically	Unit replacement only

Approachability

Relay Control	PC Control
Already prevailed and well acquainted	Less acquainted on program software

Size

Relay Control	PC Control
Generally large	Remain as compact even for a complicated control

Lead-time

Relay Control	PC Control
Long lead-time due to parts arrangement, assembly and test with difficult design for many drawings	Short lead-time with easy design of general purpose

Economical Scale (Based on Number of Relays)

Relay Control	PC Control
Less than 10 Relays	10 or more Relays

PDF(367KB)  (C) 2004 ADWIN Corp.