Burkert Type 8635 - Manual (Page 27)

8635 - 25
S
YSTEM
D
ESCRIPTION
(S/HART)
Analog repeat (optional) 4 ... 20 mA (electrically isolated)
Supply voltage U
supply
= 12 ... 30 V DC
Burden U
supply
≥ 12 V + RB • 20 mA
Binary outputs (optional) to EN 50 227 (electrically isolated)
Supply voltage 5 ... 11 V DC
Current in switching status OPEN < 1.2 mA
Current in switch. status CLOSE > 2.1 mA
Sense of action NO (normally open) or NC (normally closed)
(may be parametrized)
max. permissible values see Declaration of Conformity
PNEUMATIC DATA
Control medium Quality classes to DIN ISO 8573-1
Dust content Class 5:
max. 40 µm particle size
max. 10 mg/m³ particle density
Water content Class 3:
max. pressure dew point
- 20 °C or at least 10 degrees below lowest
operating temperature
Oil content Class 3: max. 1 mg/m³
Temperatur range of - 25 ... + 65 °C (with non-Ex devices or T4/T5)
compressed air - 25 ... + 60 °C (with T6)
Pressure range 1.4 ... 6.0 bar
Supply pressure
variation max. ± 10 % during operation
Air flow capacity of control valve
at 1.4 bar pressure drop
over valve ca. 55 L
N
/min STP for pressurizing and exhausting
at 6 bar pressure drop
over valve ca. 170 L
N
/min STP for pressurizing and exhausting
Self-consumption of air
in balanced state 0.0 L
N
/min STP
Throttle screw adjustment ratio ca.10:1
Connections G1/4'' internal thread