ABB 2TLA010029R0000 Safety Relay

Marque: ABB Jokab Safety (originally Sweden Jokab, integrated into ABB machinery safety product line)

Nom complet du modèle: RT9 24DC, Ordering Code 2TLA010029R0000, Discontinué, belongs to RT series general-purpose relais de sécurité

✅ Core Specifications

Tension d'alimentation: 24VCC

Largeur du module: 22.5mm (Montage sur rail DIN)

Sorties de sécurité: 2NO safety relay contacts

Cote de sécurité: ISO13849-1 Cat.4 / PL e; IEC61508 SIL3

Type d'entrée: Configurable for single-channel / dual-channel wiring; compatible with contact-type safety devices or OSSD outputs (safety light curtains)

Mode de réinitialisation: Réinitialisation manuelle / Réinitialisation automatique, selectable via external wiring

Température ambiante: -10℃ ~ +55℃

Terminaux: Bornes à vis, front-panel LED status diagnostic indicators

📌 Applicable Monitored Devices

E-Stop pushbuttons

Safety gate interlock switches

Barrières immatérielles de sécurité / safety light barriers

Tapis de sécurité, safety edges

Enable switches, two-hand controls, area protection; can also be used as safety output expansion module

🔧 4 Standard Input Configurations (selectable by wiring)

1. Dual-channel 2NO (+24Sortie V): Cat3 / PLd
2. Dual-channel 1NO+1NC: Cat4 / PL e, with cross-wire short-circuit detection
3. Dual-channel, one +24V and one 0V signal: Cat4 / PL e, designed for OSSD light curtains
4. Single-channel mode (simple safety circuit)

⚠️ Discontinuation & Solution de remplacement

RT9 (2TLA010029R0000) is end-of-life, no new production available, only stock or second-hand spare parts remain.

ABB new generation replacement: Sentry SSR10 (Ordering Code 2TLA010050R0000), functionally compatible, also PL e / SIL3, terminals and logic are mostly directly interchangeable.

📎 Troubleshooting Guide for RT9

1. No output after power-on: Check input circuit wiring, reset circuit and verify LED status
2. Cannot reset after safety input triggered: Confirm consistency of dual-channel signals, check for wire short-circuit or open circuit
3. Random safety output dropout: Prioritize inspection of safety device contacts, cross-channel short-circuit monitoring and earthing interference
4. Degraded output contacts: Mechanical wear of internal relay contacts, a common ageing issue for legacy RT series

ABB RT9 (2TLA010029R0000) Safety Relay Engineering Application Cases

RT9 is a compact general-purpose safety relay, 22.5Montage sur rail DIN mm, PL e / SIL3 / Cat.4, supporting single/dual channel, manual/automatic reset. Mainly used for safety circuit monitoring of standalone machines, widely deployed in packaging, machine tool, conveyor and automation workstations; End-of-life, mostly used for spare part maintenance and retrofitting of legacy equipment.

Cas 1: CNC Machining Center [Safety Gate Interlock + Dual-Channel E-Stop]

État de fonctionnement

Vertical machining center with dual-channel safety gate switches on protective doors, 2 sets of dual-channel E-Stop buttons mounted on machine frame. When operators open the door for tool change or internal cleaning, spindle and feed drive power must be cut off. Manual reset is mandatory after door closure; automatic startup is prohibited.

RT9 Wiring Scheme

1. Dual-channel input: 1NO+1NC contacts of safety gate switch connected to IN1, IN2 dual-channel, cross-wire short circuit detection enabled, meeting Cat.4 PL e
2. Mode de réinitialisation: Manual controlled reset, reset pushbutton wired to S34 terminal
3. Sorties de sécurité: 13-14, 23-24 two NO contacts wired in series into drive contactor coil circuit; Y14 auxiliary status contact connected to PLC DI for HMI display of [Door Open / Safety Circuit Fault]
4. Feedback loop: NC auxiliary contact of main contactor wired back to RT9 test input, to monitor contactor contact welding fault

Safety Logic

Protective door opened / E-Stop pressed → RT9 safety contacts open → spindle and feed power cut off, machine locked

Porte fermée + E-Stop reset → reset button must be pressed to re-energize RT9 and enable machine startup

Applicable Industry: Machines-outils, CNC, Équipement de coupe

Notes clés

Personnel can access the guarded zone, automatic reset is strictly prohibited. Dual-channel wiring enables wire break and short-circuit fault detection.

Cas 2: Automatic Packaging Line [OSSD Safety Light Curtain Monitoring]

État de fonctionnement

Horizontal packaging machine with safety light curtain (solid-state dual-channel OSSD output) installed at feeding inlet, preventing operators from inserting hands into roller hazard zone. Machine runs normally when curtain is unobstructed; immediate stop upon curtain obstruction. Automatic recovery is permitted after obstruction removal (risk assessment approves auto-reset).

RT9 Wiring Scheme

1. Input configuration: Dual-channel OSSD mode, two OSSD signals from light curtain connected to IN1, IN2
2. Réinitialiser: Réinitialisation automatique, S34 shorted, auto-recovery after obstruction removed
3. RT9 safety contacts cut off main drive contactor of packaging machine; Y14 auxiliary signal sent to PLC for curtain trigger alarm logging

Safety Logic

Hands / material block light curtain → OSSD signals de-energized → RT9 safety outputs open → roller stops. After obstruction cleared and curtain restored, RT9 auto-resets and machine restarts.

Applicable Industry: Conditionnement, Lignes de convoyeur, Assembly Workstations

Notes clés

Special OSSD wiring for light curtains, incompatible with ordinary contact mode. Automatic reset can only be adopted when risk assessment confirms no trapped personnel hazard.

Cas 3: Conveyor Line [Combined Safety Mat + Safety Edge Protection]

État de fonctionnement

Robot workstation in sorting conveyor line with safety mats laid on floor and safety edges mounted on moving guard frame. Robot and conveyor motors shut down immediately when personnel step into hazard zone or touch equipment edge safety edge.

RT9 Wiring Scheme

1. Dual-channel input: Dual-channel contacts of safety mat and safety edge wired in series to RT9 dual-channel input
2. Réinitialiser: Réinitialisation manuelle, preventing automatic equipment restart after personnel leave
3. RT9 safety outputs cut off robot power circuit; LED indicators enable fast fault localization (input open/short circuit / activation)

Applicable Industry: Tri Logistique, Postes de travail robotisés, Lignes de production automatisées

Cas 4: Small Equipment Access Hatch (Auto Reset)

État de fonctionnement

Small access hatch on side of fans and drying equipment. Hatch dimension is small; personnel cannot enter hazard zone, only accidental opening by tools will occur. Fan stops when hatch opens, automatically restarts after hatch closure.

RT9 Wiring Scheme

Dual-channel gate switch, wiring configured for automatic reset, S34 shorted. Risk assessment confirms small hatch with no personnel access risk.

Important: Automatic reset is forbidden for large protective doors or guards where personnel can enter, violating ISO13849 safety standards.

Cas 5: Standalone E-Stop Circuit Retrofit (Legacy Equipment Spare Part Replacement)

État de fonctionnement

Safety relay failure on legacy injection molding machine, original model discontinued. Stock RT9 selected for replacement, original dual-channel E-Stop buttons retained.

Points clés de la rénovation

1. RT9 22.5mm width fits existing DIN rail directly
2. Original dual-channel E-Stop contacts connected to IN1/IN2, manual reset button retained
3. NC feedback contact added to original main contactor and wired to RT9 test loop to realize contactor welding monitoring and improve safety level
4. Y14 auxiliary contact connected to original alarm indicator lamp

Remarques: RT9 is not recommended for new projects; new generation replacement ABB Sentry SSR10.

RT9 Selection & Wiring Summary

1. Reset Selection Rules

Personnel-accessible guarded area: Mandatory manual controlled reset

Small hatches with no personnel access and approved risk assessment: Réinitialisation automatique

2. Input Type vs Configuration

Contact-based safety gates, E-Stop: Dual-channel 1NO+1NC, détection de court-circuit, Cat.4

OSSD safety light curtains: Dedicated dual-channel OSSD mode

Tapis de sécurité, safety edges: Dual-channel contact input

3. Sortir: 2 sets NO safety contacts, max 6A, used to break power contactor coil circuit; Y14 is status auxiliary contact only for PLC signal acquisition, cannot be used for safety stop circuit

Common Field Faults (Frequent RT9 Project Issues)

1. Safety circuit fails to reset: Inconsistent dual-channel signals, rupture de fil, poor contact contact, incorrect reset circuit wiring
2. Spontaneous safety stop: Short between dual-channel cables, unshielded cables, strong electrical interference, cable insulation wear
3. Failed contactor welding protection: NC feedback contact of external contactor not wired to RT9 test terminals

ABB Jokab Safety RT Series Safety Relay Full Model List (RT9 included, all discontinued)

RT series: Legacy general safety relay, Montage sur rail DIN, PL e / SIL3, part number prefix 2TLA0100, all end-of-life; new generation replacement Sentry SSR/BSR/TSR series

RT Series Main Model Table

Other Legacy Jokab Safety Relay Family (often paired with RT series for selection)

BT / JSB belong to ABB Jokab legacy product line, also discontinued spare parts

| BT50 | 2TLA010030R0000 | 22.5mm, wired directly in main E-Stop circuit |

| BT50T | 2TLA010030R0100 | BT50 time-delayed version |

| BT51 | 2TLA010031R0000 | Improved BT50 |

| BT51T | 2TLA010031R0100 | Time-delayed BT51 |

| JSBR4 | 2TLA010022R0000 | Two-hand control dedicated safety relay |

| JSBT4 | 2TLA010023R0000 | Two-hand control with time delay |

| JSBT5 | 2TLA010024R0000 | Dedicated for safety mats / safety edges |

| JSBT5T | 2TLA010024R0100 | Time-delayed JSBT5 |

New Generation Sentry Replacement Series (for new projects, direct RT series replacement)

RT Series Selection Key Points

1. RT9 (2TLA010029R0000): 22.5mm narrow body, 2 AUCUN contact de sécurité, most common for small standalone machines, compatible with OSSD light curtains, safety gates and E-Stop; limitation: fewer contacts, available mainly as spare stock for legacy systems.
2. RT6: 45mm largeur, 3NON+1NC, more output contacts, suitable for applications controlling multiple contactors.
3. JSBRT11: Multi-output expansion, for large workstations requiring multiple power circuit disconnection.
4. All RT series: Max Cat.4 / PL e / SIL3; inputs support single/dual channel, wire break and short-circuit diagnosis, manual/automatic reset.