Country: USA
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Headquarters: SIKO GmbH Weihermattenweg 2 79256 Buchenbach Germany Phone+49 7661 394-0 info@siko-global.com

Subsidiary: SIKO Products Inc. 2155 Bishop Circle E Dexter, MI 48130 USA Phone+1 (734) 426-3476 sales.us@siko-global.com

Draw-Wire Encoder SG121

robust design with 12 m measurement length

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Universally usable wire-actuated encoder with measuring lengths of max. 12000 mm, robust design as well as precise and safe wire guidance; prepared for the attachment of various types of rotary encoders with 58 mm standard flange. In combination with a safety encoder from the PURE.MOBILE sensor platform, the wire-actuated encoder can also be used in safety-critical applications up to Performance Level PLd. Furthermore, the wire-actuated encoder can also be used in safety-critical applications up to Performance Level Pld for easy parameterization.

Profile SG121:

Robust design
Easy mounting
Measurement lengths up to max. 12000 mm
Flexible wire outlet thanks to Wire-Flex technology
Incremental or absolute encoder
Also available as a safety version in combination with WV58MR rotary encoder
High flexibility thanks to free choice of rotary encoders with 58 mm standard flange
Various wire types
With PURE.MOBILE technology

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Technical data

Mechanical data

Feature	Technical data	Additional information
Housing	aluminum/plastic
Wire design	ø0.6 mm	rustproof stainless steel
	ø0.6 mm	rustproof stainless steel, plastic-coated
	ø0.6 mm	para-line
Extension force	≥8 N	on the rope
Measured distance/ rope drum revolution	200 mm

Electrical data

You can find suitable rotary encoders on our website www.siko-global.com. They are suitable …

for analog outputs such as current or voltage: AV3650M, AV58M
for incremental outputs: IV5800
for absolute outputs: WV58MR, WV5800M, WV5850, WV3650M, WV36M/CAN

SIKO rotary encoders have the following interfaces, among others: incremental, SSI, CANopen, CANopen Safety, SAE J1939, various fieldbus protocols

The technical specifications for these devices can be found in the respective data sheets. In addition, numerous encoder variants from different manufacturers can be used.

System data

Feature	Technical data	Additional information
Repeat accuracy	±0.15 mm	mechanical, depending on the direction of travel (1st position)
Measuring range	≤12000 mm

Ambient conditions

Feature	Technical data	Additional information
Ambient temperature	-20 … +80 °C
Protection category		depending on the mounted rotary encoder
Shock resistance	500 m/s², 11 ms	EN 60068-2-27
Vibration resistance	100 m/s², 5 … 150 Hz	EN 60068-2-6

Technical drawing

Additional information

Extension length/measuring range

SIKO wire-actuated encoders achieve the maximum measuring accuracy when the entire wire length (measuring range) is only wound onto the drum in one layer. On the SG121, the wire diameter is selected so that when the first drum layer is used, a maximum measuring range of 6000 mm is possible.

If a lower measuring accuracy is acceptable, two to three layer winding is also possible, and the possible measuring lengths change accordingly.

dimensions refer to millimeters

Hint for mounting

When securing the wire it must be ensured that the wire is straight and vertical in relation to the wire outlet. Recommendation: Only select the starting position after an unwound length of approx. 5 mm. This prevents the wire hitting the end stop when it is rewound.

symbolic depiction

Scope of delivery

SG121
Quick Start Guide

Ordering table

Feature	Order data	Specifications	Additional information
Measuring range	A...	7000, 8000, 9000, 10000, 11000, 12000 in mm
Measuring range
Rope fixture	BGW	wire suspension with thread
	HK	wire suspension with hook
	RI	wire suspension with ring

Wire design	CS	stainless steel wire
	SK	steel wire, plastic-sheathed
	P	para-leine

Encoder type	DOG6	without encoder
	S6	great number of encoders possible

Position of electrical connection	E1	direction or wire outlet or axially	depending on installed encoder
	2	upward
	3	opposite the wire outlet
	4	downward
	O	without encoder