Pulsafeeder ELMA NEMA 4X, Installation, Operation & Maintenance Manual

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Table of Contents
ATTENTION: R
ECALIBRATION OF THIS ELECTRONIC ACTUATOR IS REQUIRED
. .............................................. 1
OPERATIONAL NOTICE .......................................................................................................................... 1
1. M
ODEL
C
ODE
B
REAKDOWN
.................................................................................................................. 2
2. I
NTRODUCTION
..................................................................................................................................... 3
2.1 General Description ................................................................................................................ 3
2.2 Standard Features ................................................................................................................... 3
2.3 Optional Features .................................................................................................................... 4
3. P
RINCIPALS OF
O
PERATION
.................................................................................................................. 5
3.1 Basic Actuator ......................................................................................................................... 5
3.2 Features .................................................................................................................................... 6
3.3 Options ..................................................................................................................................... 6
4. I
NSTALLATION
...................................................................................................................................... 7
4.1 Check Model Number .............................................................................................................. 7
4.2 Wiring Instructions .................................................................................................................. 7
5. C
ALIBRATION
....................................................................................................................................... 8
5.1 Mechanical Stops .................................................................................................................... 8
5.2 Comparator Circuit .................................................................................................................. 8
5.3 Deadband ................................................................................................................................. 10
5.4 Meter Readout .......................................................................................................................... 10
5.5 Ratio Control ............................................................................................................................ 11
5.6 Pneumatic Input ....................................................................................................................... 11
5.7 Protection Circuitry ................................................................................................................. 11
5.8 Connection Diagram ............................................................................................................... 14
5.9 Trouble Shooting ..................................................................................................................... 14
5.10 Repairs ..................................................................................................................................... 15
6. S
PECIFICATIONS
................................................................................................................................... 19
7. D
RAWINGS
19
7.1 NEMA Type 4X Cross Section ................................................................................................ 20
7.2 NEMA Type 4X Exploded Isometric ....................................................................................... 21
7.3 NEMA Type 7 Cross Section .................................................................................................. 22
7.4 NEMA Type 7 Exploded Isometric ......................................................................................... 23
Revision History:
Rev A 1/25/2019 Brand update