R&M Materials Handling, Inc
STAGEMAKER® COMPACT Concert Hoist
Springfield, Ohio USA
SM5 Manual
: 800 955-9967
Revision 1
web:
www.rmhoist.com
08/14/02
RM-SM5-MAN-2001-1-ENG
4-12
Rotary Limit Switch
The rotary limit switch is an adjustable type and provides over-travel protection for the upper and
lower limits of hoist travel. The limit switch is a control circuit type. Limit switches are not
available for hoist configuration A - direct (full line voltage) control.
Designation of the limit switches
2 position (contacts) limit switch:
Position 1: upper limit switch,
Position 2: lower limit switch
4 position (contacts) limit switch:
Position 1: lower limit switch,
Position 2: intermediate limit switch *,
Position 3: intermediate limit switch *,
Position 4: upper limit switch
Limit switch codes:
Adjustment:
The position of the air-gap between the two discs (red – gray) determines the stopping place.
This position can be found by gently turning the two discs. The length of the air gap determines
the length of the reset play in the opposite direction.
Maximum height of lift Minimum height of lift
Once the limit switch is tripped, the load must travel 18” [50cm] minimum in the opposite
direction to reset the switch.
When furnished, the rotary limit switch, regardless of type, is mounted to the outside of the SM5
hoist body. This increases some hoist body outline dimensions.
*Designation of limit may vary on application. Switch number 2 and number 3 could have
different functions.
Gray
Red
1
2
3
4
Hoist
type
Chain
(m)
Ratio
2 contacts
4 contacts
SM5
0-13
4+1/6
2249076
2249077
SM5
13-30
15
2249078
2249079
