Sequence Control Interlock

Product Model: H-SCiL

ENEX i-LOCK Series H-SCiL is the heavy industry Sequence Control Mechanical Trapped Key Safety Interlock product range.

It is suitable where non-linear replicated key sequence movements are required throughout the operating procedure cycle.

It enables complex non-linear procedures to be carried out in a controlled and safe operation.

The basic principle of this safety equipment is to function as a ‘mechanical Programmable Logic Controller (Mechanical PLC)’ modular system, where you can mix and match your mechanical key inputs and outputs to suit your application procedures while eliminating any operational errors.

The basic H-SCiL key sequence control movement comprising of a Key IN, Rotate Selector Knob and Key OUT philosophy enforcing the operator through the Mechanical PLC in a step-by-step sequence while maintaining a controlled and safe environment at all times.

Each ‘Patented’ lock portion and rotary key is uniquely coded to allow a truly safe operating sequence procedure.

H-SCiL product range can be supplied with switches and proximity limit sensors to confirm :

  • Step-by-Step key rotation and ratchet knob rotation movements

Industries that utilise the H-SCiL product range are :

  • Chemical
  • Marine
  • Mining
  • Mineral & Cement
  • Oil & Gas
  • Petrochemical
  • Power Generation
  • Pulp & Paper
  • Refining
  • Water & Utilities

Safety System Applications that are enhanced when the H-SCiL product range is installed are :

  • Pig Trap Loading / Unloading Systems
  • Reactor & Furnace Systems
  • Filter & Granulator Systems

H-SCiL Product Design complies to the following specifications :

  • SHELL DEP Specification
  • EQUINOR TR2315 Final Ver 5.02 Specification
  • ISO/TS 19837:2018 - Technical Specification
  • ISO 14119:2013 (formally EN1088)
  • Salt Mist Test (Lloyds Test Spec No 1)
  • Fire Test (API 607 & ISO 10497:2010)
  • High Temp Test 70c (EN 60068-2-2:2007)
  • High Humidity Test (EN 60068-2-2:2007)
  • Static and Dynamic Inclination (IEC 60092-504:2001)
  • Ultra Low Temp -57c (EN 60068-2-1:2007)
  • Vibration Test (EN 60068-2-6:2008)
  • Ingress Protection Test (EN 60529:1992 Amd 1&2)
  • Directive 2006/42/EC

H-SCiL product range has the following 'Best in Class' design features :

  • UK Designed, Engineered, Manufactured, Assembled & Tested Products
  • Minimum 3 billion - billion! ‘unique’ Rotary Key Code permutations from the ‘Patented’ Lock Portion & Key Design. We stopped counting at 3 billion !
  • Ultimate Safe and Secure Mechanical Interlock Design
  • Defeat, override & tamperproof compliant
  • Solid and robust construction with no cast parts
  • Materials of construction : Stainless Steel
  • Unique ‘Patented’ Lock Portion & Key Design
  • Lock Portion and Key Design have been tested to over 200’000 cycles
  • Lock Portion and Keys include ‘over torque’ protection mechanism as standard
  • Tamper proof and copy proof body housing, lock portions and keys
  • Unique ENEX i-LOCK tamper proof securing bolts
  • Unique on the ‘Patented’ key is that the code and drive members function independently
  • One single Master Key covers site installed Key Code permutations
  • Ultimate product design for normal, harsh and corrosive environments
  • Spring loaded Lock Portion Ingress Protection & Weather Seals Dust Caps
  • Can be installed to host equipment under live process conditions
  • No interference or intrusion of the host equipment pressure envelope
  • Anchor & Adaptor units designed and manufactured to suit the host equipment
  • Handwheel diameter is sized and selected to maintain host equipment operating torques
  • Product serial number traceability on every unit
  • Secure mechanical fixing of all labels and tags
  • Full colour coded key & dust cap tagging option for enhanced error elimination
  • Pad lockable dust covers are an option for lockout hasp and scissor hasps operation

ItemPart DescriptionMaterial
1BodyStainless Steel AISI 316L
2Top BearingNylon
3Main Drive UnitStainless Steel AISI 316L
4Lock portion & ingress protection capsStainless Steel AISI 316L
5Internal locking mechanismStainless Steel AISI 316L
6Cam PlatesStainless Steel AISI 316L
7Body Securing Bolts & FastenersStainless Steel A2 Class 70
8Link BarsStainless Steel AISI 316L
9Rotary Selector KnobStainless Steel AISI 316L
10Bottom Roller BearingStainless Steel AISI 316L
11Operating KeyStainless Steel AISI 316L
12Name Plate, Dust Cap Tag and Key TagTroPly

Model No.Height
H-SCiLsee notesee notesee notesee note

(note : dimensions and weights will vary depending on the No. of lock portions and options per unit)

1. 2.3.4. 5.
HHeavy Industry
SCSequence Control Interlock
Standard if un-coded
Son/off switch
S(Ex)Ex rated on/off switch
LLimit sensor
L(Ex)Ex rated limit sensor
 Standard if un-coded
XSpecial Build