Electro-Sensors SG1000RA User Manual

SG1000RA SlideGate Monitor
SG1000RA general description ('R' is for 'relays')
The SG1000RA is a SlideGate Monitor with a 2-Relay output.
The SG1000RA is a rugged, medium cost encoder-based
monitoring device that enables the end-user to very accurately
monitor a slide-gate's fully-open and fully-closed positions.
The SG1000RA has two modes: Calibration Mode, and Normal
Operating Mode. A simple calibration procedure teaches
(programs) the SG1000RA the fully-closed (0% open)
and fully-open (100% open) gate positions. Once programmed,
the SG1000RA de-energizes one relay when the gate is in the
fully-closed position, and de-energizes the other relay when the
gate is in the fully-open position. Any gate position between
fully-closed and fully-open, is represented by both relays being
energized.

Physical Appearance and Installation Overview

Figure 1 is the front-view of the SG1000RA, showing the
encoder-output-shaft (with the most common shaft end-thread
type shown).
Cable
The SG1000RA attaches to the slide-gate's 'rack and pinion'
shaft, or similar rotating mechanical component, using an "end-
of-shaft" mounting method. See Figure 2. In the most common
application, the SG1000RA's encoder-shaft-end screws into a
single 3/8-inch diameter hole, to a depth of 0.625 inch, having
3/8" – 16 UNC-2B threads. (Other encoder-shaft end-thread
types are optional.)
Even though the SG1000RA is mounted to the process shaft
via the "end-of-shaft" mounting method, installation of flexible
conduit and of the optional stabilizer bracket is recommended,
which allows the SG1000RA to "float" along with any wobble
of the process's shaft while still preventing the SG1000RA itself
from rotating along with that shaft (see Fig. 2).
Note: The stabilizer bracket's U-bolt is slightly oversized
to provide about 1/8" of slack between it and the
SG1000RA. The U-bolt's slack prevents it from
rigidly clamping to the SG1000RA's conduit port.
6111 Blue Circle Drive
Minnetonka, MN 55343
Phone: 952.930.0100
Fax: 952.930.0130
ISO 9001:2015 Certified
Encoder-Shaft
3/8"-16 UNC-2A threads
Figure 1:
SG1000
U-Bolt
with slack
Flexible
conduit

Electrical connections

First, remove (twist CCW) the back-end-cover from the
SG1000RA's red enclosure, to reveal the User Interface Board
(see Figure 3).
SW2 Calibration Button
Red LED
100% Open
Relay
RELAY 2
SET-POINT
SW1 Relay
Setpoint
Selection
Figure 3: User Interface Board
Second, remove the nylon-retained metal nuts that hold the User
Interface Board in place, to reveal the terminal block TB1 (see
Figure 4)
Terminal Block
TB1
1 2 3 4 5 6 7 8 9 10
Figure 4: Terminal Block View
Free Catalog and Application Assistance
Process Shaft
Stabilizer bracket
(use is optional)
Structural Framework
Figure 2:
Red LED
0% Open
CAL
Relay
RELAY 1
SW2
CAL
1
0 2
3
SW1
Green LEDs
Calibration
Status
Earth Ground
Screw
1.800.328.6170
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990-007000 Revision A