Pulsafeeder ELMA NEMA 4X, Инструкция по установке, эксплуатации и обслуживанию

Страница: 21 / 27

19
6. Specifications
NEMA Type 4X Actuator Enclosure
•
0-100% Stroke Length Indicator at pump
•
115 V, 60 Hz or 220 V, 50 Hz, 1 phase AC supply
•
Signal Ranges
a. 4-20 mA dc @ 250 ohm impedance
b. 1-5 V dc greater than 270,000 ohm
c. 3-15 psi instrument air
•
Deadband adjustment from 0.5 – 6.0%
•
15 second max response time for 0-100% change
•
Micrometer manual override with override switch
•
Output signal: 4-20 mA dc
•
Operating temperature range: -
13˚F to 122˚F (
-
25˚C to 50˚C)
Outstanding Features
•
NEMA Type 4X moisture tight or NEMA Type 7 explosion proof
(Class 1, Division 1, Group C & D actuator enclosure)
•
Manual override with override switch – standard
•
0-100% stroke length indicator at pump – standard
•
High Resolution Servo-Amp built into actuator – no separate cabinet
required.
•
15 second maximum response time for 0-100% change
•
Power consumption is only 60 watts
•
Compact space saver design
•
Electric (standard) or pneumatic (option) signal capability
•
Circuit board drives at 4-20 mA signal for "handshake" (control
interface) mode
•
Signals completely isolated form AC supply
•
Closed loop control system utilizes AC synchronous motor
technologies
•
Can operate under continuous stall or without signal without damage
•
Plug capability for ratio control
•
Design allows easy field conversion
7. Drawings