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GEMÜ R639 eSyStep
Positioner (Code S0)
4 Correct use
3.2 LED displays
3.2.1 Status LEDs
LED
Colour
Function
Standard
Inversed
1)
Power/fault
green
green
Operating indica-
tion/
communication
status
red
red
Open
orange
green
Process valve in
OPEN position
Error
red
red
Error
Closed
green
orange
Process valve in
CLOSED position
1) Inversed representation of the OPEN and CLOSED LEDs, ad-
justable via IO-Link
3.2.2 LED conditions
Status
process
valve
Power/
fault
Open
Error
Closed
OPEN posi-
tion
CLOSED po-
sition
Position un-
known
Initialization
Open and Closed flash
alternately
LED conditions
lit (on)
flashes
off
3.3 Description
The GEMÜ R639 is a motorized 2/2-way diaphragm valve. The
eSyStep electric actuator is available as ON/OFF or with integ-
rated positioner. An integral optical and electrical position in-
dicator is standard. The self-locking actuator holds its posi-
tion in a stable manner when idle and in the event of power
supply failure.
3.4 Function
The product controls or regulates (depending on version) a
flowing medium by being closed or opened by a motorized ac-
tuator.
The product is equipped as standard with a mechanical posi-
tion indicator as well as an electrical position and status indic-
ator.
4 Correct use
DANGER
Danger of explosion
▶
Risk of death or severe injury.
●
Do
not
use the product in potentially
explosive zones.
WARNING
Improper use of the product
▶
Risk of severe injury or death.
▶
Manufacturer liability and guarantee will be void.
●
Only use the product in accordance with the operating
conditions specified in the contract documentation and in
this document.
The product is designed for installation in piping systems and
for controlling a working medium.
The product is not intended for use in potentially explosive
areas.
●
Use the product in accordance with the technical data.
