IDEMPull-cord switch product details

IDEM Guardian seriesGLM Miniature safety pull-cord switch

IDEM'sGuardian seriesGLM are safety pull-cord switches with a compact and robust yellow die-cast housing, protecting short conveyors up to50m and offering accessory options based on the application. They are designed for installation on machinery and sections of conveyors that cannot be protected by guards, and unlike emergency stop buttons that can be activated from any point along the pull cord, they provide reliable emergency stop protection.

When combined with dual-channel safety monitoring relays, these safety pull-cord switches can be used as emergency stop devices and monitor whether the category reaches Category 4, complying withEN 954-1 orPLe ISO 13849-1。 Guardian The series complies withISO 13850 andIEC 60947-5-5, and features a positive mechanical linkage between the switch contacts and the steel cable, as well as line break monitoring. After pulling the cord, the safety contacts reliably open at any position within its length, and the auxiliary contacts close. According toISO 13950 requirements, the switch employs a mechanical latch and can only be returned to the operating state by pressing the blue reset button.

IDEM pull-cord switch performance:

The switching mechanism will instantly latch open the safety contacts, complying with the ISO13850 standard

A single switch can cover up to 30m

Two switches can cover up to 50m

Positive-break contacts comply with IEC60947-5-1

Robust yellow die-cast housing

IP67 rating

The robust integrated sealed membrane box indicates it can withstand high-pressure washdown

All internal screws are made of stainless steel

Easy wiring, with 3 M20 conduit entries

4 poles,3 normally closed/1 normally open or 2 normally closed/2 normally open

IDEMPull cord switch notes:

826-4101 and 826-4104 with emergency stop and LED。

IDEMPull cord switch approvals:

CE、cULus、TUV。

IDEMPull cord switch standards:

IEC 60947-5-1、IEC 60947-5-5、EN 954-1、EN 62061、UL 508、ISO 13850、ISO 13849-1。

IDEMPull cord switch applications:

Safety rope emergency stop switches are installed on machinery and parts of factory conveyors that cannot be protected by guards. Unlike traditional

mushroom-head emergency stop buttons, safety rope switches can initiate an emergency command from any point along the length of the installed rope.

When combined with any dual-channel safety monitoring controller, the IDEM safety rope system can be used as an emergency stop device and can monitor **CategoryPLe / Cat.4toISO13849-1。

IDEMPull cord switch operation:

All IDEM safety rope emergency stop switches comply with European standardsISO13850（EN 418) andIEC60947-5-5. There is a positive mechanical link between the switch contacts and the steel wire rope in accordance withIEC60947-5-1. By usingaa tensioner to bring the emergency stop switch into the operating state by pre-tensioning the rope/Clamp the rope with the clamp and then hook it onto the switch eye bolt. Correct tension can be observed by viewing the tension indicator on the switch housing. Once tensioned, the switch contact block can be set to the operating state (safety contacts closed, auxiliary contacts open) by pressing the blue reset button on the switch cover. All safety rope switches have broken wire monitoring. In the event of a pulled rope or broken rope (loss of tension), the safety contacts are positively opened and the auxiliary contacts are closed. The switch is mechanically locked and can only return to the operating state by pressing the reset button as required.ISO13850（EN418）。

IDEMPull cord switch installation guide:

1. AllIDEMThe installation of the safety rope switch system must comply with the risk assessment for the individual application. Installation may only be carried out by

qualified personnel and in accordance with these instructions.

2. According toISO13850（EN418), pulleys may only be installed such that the entire rope length is visible.

3. Rope support eye bolts must be installed at2.5m intervals. Min. to3m.**. Along all rope lengths between switches. The rope must be supported no more than500mm from the switch eye bolt or safety spring (if used). The first500mmis important not to be considered part of the active protection range.

4. Must useM5mounting bolts to secure the switch. The tightening torque of the mounting bolts to ensure reliable fixation is4 Nm. The tightening torque for the cover screws, conduit entry plugs and cable glands must be1.5 Nmto ensureIPsealing. Only correctly sized sealing tubes for the conduit entry and cable outer diameter may be used.

5. Rope tension is achieved by usingIDEMtensioners/clamp assemblies. During installation, set the tension to the middle position indicated by the mark in the observation window of each switch. Check the operation of all switches and control circuits by pulling the rope at different positions along the active protection area, and press the blue reset button to reset each switch. Ensure that each switch latches and requires manual resetting by pressing the blue reset button. Further increase system tension if necessary, depending on the length of the active coverage being checked. If equipped with mushroom-head emergency stop buttons (red), test and reset each switch to ensure proper function of the safety control circuit. Typical operating conditions for successful system operation are less than75Npull force and rope deflection between the pull and eye bracket is less than150mm。

IDEMPull rope switch maintenance:

Weekly: Check correct operation of the system across all coverage areas.

Check nominal tension setting and re-tension the rope if necessary.

Every 6 months: Isolate power supply and remove the cover.

Check screw terminal sealing and inspect for moisture ingress.

Do not attempt to repair any switch.

IDEMRecommended rope span options and accessories for pull cord switches - (conduct a separate risk assessment based on installation conditions):

IDEMWiring examples for pull cord switches:

LED red flashing or steady: Stop

LED green steady: Run

When power is applied to the red wire, the light turns red.

When power is applied to the green wire, the light turns green.

For 110Vac and230Vacversions, black is0V.dcor neutral.

IDEMPull cord switches suitable for mushroom-head emergency stop buttons:

a) Remove from the mounting portM12the threaded plug.

b) Apply the threaded locking solution toE Stopthe threads of the mechanism.

c) Insert the emergency stop mechanism into the mounting port and tighten to1.5Nm。

d) After installation testing and reset, ensure all safety circuits are functioning properly.

10. Technical Specifications

IDEMPull cord switch electrical:

Safety contact type IEC 60947-5-1 double-break typeZb

Contact material: Silver

Terminal clamps 2.5 mm² wires

Rating utilization category: AC15

Operating ratingAC15 A300 240V。 3A / 120V 6A。 AC 24V。 2.**DC inductance

Thermal current (Ith)10A

Rated insulation voltage (Ui)500V。

Impulse withstand voltage (Uimp)2500V。

External fuse for short-circuit and overload protection 10A. (FF）

Optional explosion-proof contact block types

IDEM pull-wire switch certificate

EC type certificate number

IEC certificate number

IDEM LS-Ex

Baseefa11ATEX0267X

IECEx BAS11.0133X

Classification Ex d IIC T6 (-20C Ta 60C）Gb

Ex tb IIIC T85C（-20C Ta 60C）Db

IDEMPull-wire switch rated voltage

1，21，2，22

250V AC/DC

Rated current 2-pole4A。 4Pole2.**。

Optional AS-I safety versionM12

Operation/Fault/Function green/Yellow/Red

AS interface/Extended cross-mode possible versions2.1 / no

AS-I profileS-7.B.E

I / O configuration/ IDCode7(hexadecimal)/ B.E(hexadecimal)

IDEMPull-wire switch safety classification and reliability data:

Mechanical reliability B10d

EN 954-1

ISO 13849-1

EN 62061

Safety data - annual usagePFHdProof test interval (service life)MTTFdValue at100mAunder load1.5×106operations to reach safety relay category4up toPLedepending on system architecture up toSIL3depending on system architecture per hour8cycles/per day24hours/ 365days

<1.0×10-7

21 years

214 years

(display GLH)

(display GLS / GLM)

Wiring circuit AS-i versionM12Male connector

IDEMPull-wire switch pinout view

9. Suitable for mushroom-head emergency stop buttons:

a) Remove from the mounting portM12the threaded plug.

b) Apply the threaded locking solution toE Stopthe threads of the mechanism.

c) Insert the emergency stop mechanism into the mounting port and tighten to1.5Nm。

d) After installation testing and reset, ensure all safety circuits are functioning properly.

10. Technical Specifications

Information on UL 508:

Type 1 enclosure.

Control number 35NV.

Use 16 - 12AWG copper conductors,

** is 90ºC。

For use with the same polarity and

one polymer conduit connection.

Electrical ratings:

**. Switching current/voltage/Amplifier:

120V。 6A。 （720VAinterruption)PF 0.38

240V。 3A。 （720VAinterruption)PF 0.38

Information on AS1755.2000: Article2.7.9.1:

1. Vertical force at mid-travel operation of the switch

between Eyebolt supports:

Check < 70N. Rope deflection<300mm

2. Axial force- along the rope axis:<230N. (Typical125N）。

LED red flashing or steady: Stop

LED green steady: Run

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Weidou Intelligent Technology (Shanghai) Co., Ltd.
Weidu Intelligent Technology (Shanghai) Co., Ltd 
Add:No. 2601, Xietu Road, Xuhui District, Shanghai, China
Contact: Candy
Mobile: 0086 173 0212 6825
Tel:0086 021-50610211
QQ：204 666 9799
Email：candy@wdutech.com
Web：www. wdutech.com