SAFEDGE
PRESSURE SENSITIVE
SAFETY EDGE SYSTEM
INSTALLATION
& USER MANUAL
READ THIS MANUAL IN FULL BEFORE INSTALLATION
After installation this manual should be
retained in a safe and accessible place
R
Drawing No: 31611
Issue 2
R
EO: 26630
Guardmaster Safedge
Pressure sensitive safety edge system
Installation and user manual
SECTION 1 STORAGE AND HANDLING
SECTION 2 SYSTEM DESCRIPTION
SECTION 3 INSTALLATION & SPECIFICATIONS
SECTION 4 ELECTRICAL CONNECTIONS
SECTION 5 COMMISSIONING & USE
SECTION 6 MAINTENANCE & SERVICE
SURFACE MOUNTING DIN RAIL MOUNTING
SAFEDGE
EN 954-1 Cat. 3
pr EN 1760-2
A1 + Z 2 MC 13 23 31
A2
-- Z1 MC 14 24 32
STOP
RUN
OPEN
Control unit
Isolate before opening
Made in the UK
(A1/A2) 110/230VAC selectable
(+/-) 24V AC/DC
440F-C251D
A1 + Z 2 MC 13 23 31
A2
-- Z1 MC 14 24 32
R
SAFEDGE
RUN
STOP
OPEN
Safedge Pressure Sensitive Safety Edge System
Control Unit
Supply Voltage 230/110VAC (see selector)
50-60Hz 0r 24V AC/DC
IP65 Hoseproof, Dust tight
Safety Contacts 250V 2A N/O
Aux Contacts 250V 2A N/C
Safedge Profile Voltage 12Vdc
EN 954-1 Category 3, prEN 1760-2
System response time 13mS
See user manual for further information
ISOLATE POWER BEFORE OPENING
R
PRESSURE SENSITIVE EDGE SYSTEM
CONTROL UNIT Pt. No. 440F-C251P
MADE IN THE UK
Record of Thorough Inspection And Test
(see section 6.2.2 and 6.2.3)
Date Inspected By Comments
261
225
Record of Routine Inspection And Test
(see section 6.2.2 and 6.2.3)
Date Inspected By Comments
INTRODUCTION
The Safedge sensitive edge sensing system is ideal as a safety sensor in applications such as
power operated doors, automated vehicles and moving machinery beds etc. It can provide a
continuous line of high sensitivity touch sensing along or around practically anything.
This manual covers the use of the parts of the Safedge system. If joints or corners are required,
contact your supplier. All installation work must be carried out by suitably trained and qualified personnel and should be in accordance with statutory requirements for safety. READ THIS MANUAL IN FULL
BEFORE INSTALLATION. After installation this manual should be retained in a safe and accessible
place. For any further assistance, please contact your supplier.
1.0 STORAGE & HANDLING
STORAGE
The Safedge control unit and Profiles should be stored within the temperature range of
- 10°C to + 55°C.
HANDLING AND TRANSPORT
The Safedge control unit and Profile should be transported within the temperature range of - 10°C
to + 55°C and should not be subjected to any impact or heavy loads. The original packaging should be
used to give protection from excessive flexing. Always unpack carefully and avoid damage by the use
of knives etc.
2.0 SYSTEM DESCRIPTION
The Safedge system comprises of up to 50 metres of Profile, cable connector, a terminating resistor,
“C” rail and a control unit. The control unit can monitor lengths of up to 50 metres. All Profiles have
the same principle of operation.
SAFEDGE PROFILES
30
36
68
28.5
12.59
24.5
2
28 - 30
25
14
43
17
30
36
6829
28.5
12.59
24.5
2
Cushion factor 5mm
440F-E0110S
440F-E0110R : Red profile
440F-E0110N : Increased resistance
to oil.
25
14
43
28.5
440F-E0310S
Cushion factor 41mm
440F-E0510S
Cushion factor 5mm
with sealing lip
440F-E0210S
Cushion factor 41mm
with sealing lip.
440F-E0804S
Cushion factor 19mm
with sealing lip
fig. 1 fig. 2 fig. 3 fig. 4
fig. 5 fig. 6
Cushion factor 19mm
440F-E1610S
440F-E1610N : Increased resistance
to oil.
FOR VARIOUS CONNECTION PIECES AND
ACCESSORIES, PLEASE REFER TO OUR
CATALOGUE
3 24
Record of Routine Inspection And Test
(see section 6.2.2 and 6.2.3)
Date Inspected By Comments
ALL “C” RAILS ARE SUPPLIED WITHOUT FIXING HOLES
“C” Rail 440F-R1212 can be supplied curved to meet most applications
25 25
10
25
18
25
10
25
10
25
10
"C" rail-aluminium C112/A
440F-R1212
Suitable for the fixing of all the
Safedge Profiles.
"C" rail-zinc coated steel C112/S
440F-R1112
Suitable for the fixing of all the
Safedge Profiles.
"C" rail-aluminium C112/A3
440F-R1215
Ideal when external fixings of "C" rail is
required. Accepts all profiles.
25
10
30
"C" rail-aluminium C112/A2
440F-R1214
Ideal when external fixings of "C" rail is
required. Accepts all profiles.
"C" rail-aluminium C112/A4
440F-R1216
Deeper rail allows cables to be run through
channel under safedge profile. Accepts all
profiles.
"C" rail PVC
C112/PB = Black 440F-R1212PB
C112/PR = Red 440F-R1212PR
C112/PY = Yellow 440F-R1212PY
Suitable for the fixing of all the Safedge
Profiles. 3 colours available.
423
Record of Routine Inspection And Test
(see section 6.2.2 and 6.2.3)
Date Inspected By Comments
Each Profile uses a combination of non-conductive rubber and a flexible wire cored conductive rubber,
bonded together to form a variety of energy absorbing Profiles. The Profile has no rigid internal parts
which can “break through” or cause fatigue failures after prolonged use. The maximum operating
voltage of the Profile is 12 VDC so no dangerous voltage is exposed if the Profile is accidentally cut or
sheared. The copper wire core throughout the length of the Profile ensures that there is no significant
build up of resistance over long lengths.
The circuit through the Profile is monitored by the Safedge control unit which, when a 6KΩ resistance
is present (i.e. normal run conditions), produces a signal to the machine control circuit.
When the Profile is pressed, from any direction through 90° as shown above, the top conductive
rubber strip compresses and touches the middle conductive rubber so creating a “short circuit” and the
overall resistance drops. This is monitored by the control unit which initiates the machine shutdown.
Any single fault in the Profile or the wiring connections to the Profile will be detected and the control
unit outputs will go to a safe (OFF) state.
Individual Profiles connect to each other by wires, axial connectors or standard 90° connectors. The
Profiles are connected to the control units by two wires. The control unit has fully cross monitored
safety relays and it is possible to configure the unit so that an external contactor fault will be detected.
Compliance with the requirements of EN 954-1 Category 3 and pr EN 1760-2 is achieved for the
control unit regarding electrical faults and can be met for the associated part of the machine control
system. Compliance with the requirements of EN 954-1 Category 1 is achieved for the Profile.
The Safedge system complies with the requirements of the European EMC Directive. Normal operation
under interference conditions likely in industrial environments is assured as it has been tested and certified.
NOTE:- Special measures may be required in the presence of abnormally high levels of EMI e.g. near
to welding or induction heating equipment or near to radio transmitters / transceivers.
Conductive
Rubber
Non Conductive Rubber
Flexible Wire
Cores
Flexible copper
cores send the
signal to the
Evaluator
90°
45°
45°
'Contact'
Zone
5 22
Record of Routine Inspection And Test
(see section 6.2.2 and 6.2.3)
Date Inspected By Comments
3.0 INSTALLATION OF THE SAFEDGE SYSTEM
ONLY USE 440F-A0020 CYANOACRYLATE.
The cyanoacrylate adhesive ensuring a lasting sealing and high protection to IP65.
3.1 INSTALLATION OF “C” RAIL
"C" RAIL
CABLE CONNECTOR
CLOSING CAP
TO CONTROL UNIT
OR NEXT PIECE
OF PROFILE
CONNECTOR
WITH RESISTOR
621
6.2.4 Repair
Prior to working on a Safedge system or machine control system, isolate the power source to the
machine and Safedge system. Observe electrical safety precautions.
User repairs are limited to replacement with new Safedge system parts. In the event of any problems,
the units should be returned to the supplier.
Any repairs to the connecting wires should be made using heat shrink butt splice connectors.
After replacing any parts the inspection and test shown at 6.2.2 & 6.2.3, must be carried out with
special attention given to those parts replaced.
TAMPERING WITH COMPONENT PARTS WILL INVALIDATE WARRANTY.
WARRANTY INVALID IF QUALITY SEAL IS BROKEN ON THE DIN RAIL (440F-C251D) CONTROL
UNIT
WARNING
After maintenance or repair operations it is important that all fastenings, cable protection etc, are
correctly refitted. Failure to do this or the use of non approved parts may result in the Safedge system
failing to achieve its specified performance.
3.1.1 MOUNTING THE “C” RAIL
3.2 ASSEMBLY & INSTALLATION OF THE SAFEDGE PROFILE
3.2.1 Cut the Safedge Profile to length.
Profiles without coasting chamber should
be cut with rubber shears.
Profiles with coasting chamber should be
cut with a fine tooth saw.
Holes drilled on
installation
(Fasteners not
supplied)
20
6.2.1 Profile Cleaning
The Profiles should be kept clean of deposits such as swarf and other materials to prevent damage or
dead-zones. It is permissible to use warm water and a mild detergent to clean the surface area.
DO NOT USE SOLVENTS.
6.2.2 Routine maintenance inspection and test - (
recommended weekly or after repair
)
Stop the machine, clean the Profile(s) and allow to dry off. Inspect the surface of the Profile for
damage. Any damage that punctures the profile could let material or liquid in. It must be dealt with
immediately. Check that all end caps, corners and joints are secure and free from damage. Damaged
parts must be replaced immediately.
Test the Profile operation. Two people may be required, one to press the Profile and one to observe the
operation of the control unit. On systems using Manual reset mode, the reset button must be
continuously pressed. Check that the RUN “Green” LED is illuminated when the profile is not pressed
and that the STOP “Red” LED is illuminated when it is. Start the machine, press the Profile and check
that the machine stops immediately.
If these checks reveal any problems, do not allow use of the machine until they are rectified. Record all
inspections and tests in a written log.
6.2.3 Thorough examination and test - (
twice yearly or after repair
)
To be undertaken by a person competent in electrical and mechanical engineering.
a) Carry out tests at 6.2.2
b) Isolate the power source to the machine and Safedge system. Observe electrical safety
precautions.
c) Inspect the Profile and components thoroughly for mechanical damage.
d) Disconnect the wires to the Profile at terminals Z1-Z2.
e) Connect the wires from the Profile to the input of an ohmmeter. One person should now press the
Profile with one hand at every point on the strip. The resistance should measure 6K +/- 10% when
the profile is not pressed and no greater than 1K when it is.
If these checks reveal any problems, do not allow the use of the machine until they are rectified.
Record the inspection and test in a written log.
7
6.0 MAINTENANCE AND SERVICE
6.1 FAULT FINDING GUIDE
Symptom Probable Cause Check
“Yellow” LED Open circuit in profile or Z1-Z2 Terminals are secure.
Illuminates. connecting wiring. Cable for breaks
Profile for damage.
No LED’s illuminate even if Supply failure. Voltage selector switch is set correctly.
Profile is pressed. Supply fuse.
Supply voltage is present.
No LED’s illuminate unless Failure to reset. If using contactor monitoring, check
Profile is pressed and then each contactor is functioning correctly.
the stop “Red” LED MC-MC terminals are secure.
illuminates. Link is in place or Reset button
functions correctly.
Unit appears to work Blown fuse. Output fuses.
correctly but there is no Damaged or incorrect wiring. All wiring for damage.
output.
Fault on Safedge causing Movement on any internal relays.
the Outputs to fail safe REPLACE CONTROLLER.
Machine does not stop if Incorrect external connections All wiring to contactors for mistakes.
Profile pressed.
Run “Green” LED goes off.
Machine does not stop if DO NOT ALLOW THE USE OF THE MACHINE
Profile pressed.
REPLACE CONTROLLER.
Run “Green” LED stays on.
6.2 MAINTENANCE
This section should be read in full before any maintenance work is attempted.
Attention is drawn to regulations for planned preventative maintenance under E.U. Directive
89/655/EEC (Implemented in Great Britain as the Provision and Use of Work Equipment Regulations
1992).
During maintenance operations, disconnect the machine’s prime mover before working on the
Safedge system. Observe electrical safety precautions.
19
3.2.2 When using the closing cap 440F-A1302 with
sealing lip, the profile base has to be cut
back to a length of 12mm. The cut must
be made carefully to ensure that the profile
base is completely trimmed off, leaving a
flush surface.
3.2.3 The shaded areas must be roughened
with emery paper
3.2.4 The closing caps are moulded with 4
grommets, each with a rubber plug. When
fitting a resistor, leave the plugs intact. When
making a cable connection, select the
required cable exit and remove the plug from
the grommet with a hole punch.
3.2.5 Pull the connecting cable through the
hole.
12
8
3.2.6 Prick each of the copper wires with one of
the needles. Press the needle contacts of
the connector in the direction shown:
(wedge outwards), straight into the copper
wires.
3.2.7 CAUTION
The narrow side (wedge) of the connector
must show outwards.
3.2.8 Fold back the sealing lip of the cap;
a) Apply adhesive to shaded area of closing
cap as illustrated then affix to edge of
profile, applying pressure for 10 seconds
to ensure adhesion.
b) Apply adhesive to remainder of shaded area
and allow sealing lip to make contact with profile.
IMPORTANT: Spread the adhesive evenly over the
shaded area! Do not allow adhesive to enter inside
the profile.
5.3 APPLICATIONS
Z1
Z2
+
-
Brown
White
L
6K
RESISTOR
STOP
START
110/230V AC SUPPLY
110/230V AC Application with 2 contactors, contactor monitoring
and START/STOP circuit. (Shown with profile pressed)
MOMENTARY
PUSH BUTTON
EXTERNAL FUSE
+ve Z1 Z2 13 23 31
NE
-ve MC MC 14 24 32
SAFEDGE
PROFILE
SAFEDGE
CONTROL
UNIT
K1
K1
K2
K2
K1
K2
(A1)
(A2)
L
6K
RESISTOR
K1
EXTERNAL FUSE
110/230V AC Application with 1 contactor.
(Shown with profile pressed).
+ve Z1 Z2 13 23 31
NE
-ve MC MC 14 24 32
SAFEDGE
PROFILE
SAFEDGE
CONTROL
UNIT
(A2)
(A1)
189
3.2.9 To ensure complete seal apply more
adhesive on the Safedge Profile around
grommet/cable exit and sealing lip of the
closing cap.
3.2.10 Axial profile connector 440F-A0061S is used
for extensions and repairs (see steps 1, 2, 3,
6 and 7) for the 440F-E0110 series of profiles
only. For other types, use straight pin connectors.
3.3 CONTROL UNIT
3.3.1 TECHNICAL SPECIFICA
TION
440F-C251P Surface mount 440F-C251D DIN rail
Conformity: prEN 1760-2, EN 954-1: CATEGORY 3
Power Supply - user select: 110/230V AC (50-60Hz) and 24V AC/DC +10% -15%
System response time: 13mS
Environmental protection: IP65. Enclosure IP40 DIN0470
Terminals IP20 DIN0470
Max. Safedge profile voltage: 12V DC (open circuit).
Nominal operating voltage: 4V (run condition).
Max. output fuse: 2A quick acting 5A quick acting
Impulse withstand voltage: 2500V.
Over voltage: Category 2
Contamination level: III
Min. switched current/voltage: 10mA/10V
Power consumption: <6 VA
10
5.2 AUTOMATIC RESET MODE
1) Turn the power on
a) Run “Green” LED illuminates.
b) Safety contacts close.
c) Auxiliary contacts open.
d) Contactors energise.
2) Press the Profile
a) Run “Green” LED extinguishes.
b) Stop “Red” LED illuminates.
c) Safety contacts open.
d) Auxiliary contacts close.
e) Contactors de-energise.
3) Release the Profile
a) System has returned to step 1a.
Comparative properties
Profiles Profiles
440F-E0110N 440F-E0110S 440F-E0110R 440F-E0510S
440F-E1610N 440F-E1610S 440F-E0804S 440F-E0310S
440F-E0210S
Tensile strength (reinforced) MPa 26 20
Resilience (20°C) F G
Low temperature flexibility F G
Resistance to sunlight G G
Resistance to heat ageing G G
Resistance to oxidation F G
Resistance to ozone F G
Resistance to H
2OGG
Resistance to dilute acids F G
Resistance to concentrated acids F G
Resistance to oils & greases G P
Key:- G = Good F = Fair P = Poor
17
440F-A0061S
Terminal block tightening torque rating 7 in/lbs,
suitable for wire sizes 16AWG.
Use 16AWG minimum.
Use Copper Conductors Only.
Temperature rating of field wiring shall not be
less than ambient.
5.0 COMMISSIONING & USE SEQUENCE OF OPERATION
When the unit is installed, check the following sequence of operation.
5.1 Manual reset mode.
1) Turn the Power on
a) No LED’s illuminate.
2) Press the reset switch
a) Run “Green” LED illuminates.
b) Safety contacts close.
c) Auxiliary contacts open.
d) Contactors energise.
3) Press the Profile
a) Run “Green” LED extinguishes.
b) Stop “Red” LED illuminates.
c) Safety contacts open.
d) Auxiliary contacts close.
e) Contactors de-energise.
4) Release the Profile
a) Stop “Red” LED extinguishes.
b) System has returned to step 1a.
5) If Profile is pressed before reset
a) Stop “Red” LED will illuminate each time the
Profile is pressed but the safety contacts will not energise.
440F-C251P Surface mount 440F-C251D DIN rail
Relay outputs: 2 x independant volt free N/O safety contacts
1 x volt free N/C auxiliary contact
NOTE: Auxiliary should not be used for safety
Utilisation category: AC - 15; 2A / 250V DC
DC - 13; 2A / 30V DC
Safety inputs: Safedge profile (open resistance 6KΩ)
Indication LED 1: Green: Run.
LED 2: Yellow: Open.
LED 3: Red: Stop.
Internal controls: AC voltage selector
Internal fuses: 2A safety fuses replaceable (2 off) 500mAT supply fuse replaceable (1 off)
500mAT supply fuse replaceable (1 off)
Max. output fuse: N/A 4A on AC / 2A on DC
Ambient temp. range - control unit -10°C to + 55°C.
Ambient temp. range - profile -5°C to +55°C excluding 110N & 01610N (0°C to 55°C)
Humidity: Up to 90% RH at + 55°C.
Vibration: Tested in accordance with IEC 68-2-6, frequency range
10 - 55Hz, displacement 0.15mm
10 cycles per axis, sweep rate, 1 octave per minute
MC-MC contactor monitor loop: N/C (normally closed) contactor loop
Max. conductor size: 1 x 1 mm2stranded with sleeves stripped 1x2.5 mm2stranded with sleeves stripped
5mm, 1 x 1.5mm2solid conductor. 8mm, 1 x 4 mm2solid conductor
Terminals: Minus terminal screws Plus-minus terminal screws M3.5 with
M2 spring action. self lifting connection, washer terminal
boards separately removable.
Installation group: C in accordance with VDE 0110.
Material: Polycarbonate
Fixing details: 4 x M4 holes 35 mm DIN Rail
Housing: D=75mm, H=130mm, W=130mm D=120mm, H=73mm, W=45.5mm, 16 way
Weight: 650g 450g
Miscellaneous: The Safedge Profile must be terminated with a 6KΩ resistor.
11 16
440F-E0110N 440F-E0110S 440F-E0310S 440F-E1610N 440F-E1610S
actuating distance: 6.4mm 6.6mm 8.0mm 7.8mm 9.4mm
response distance: 1.2mm 1.9mm 27.2mm 8.4mm 5.0mm
• max. speed: 100 mm/s
• suitable for the detection of fingers
The control unit must not be mounted inside the hazard zone. Access to the control unit is required for
manual reset or for routine indicator observation so it must be able to be seen operating. The control
unit can be mounted on either side of power doors, as long as the only hazard is the actual doors.
In all other cases the control unit can be mounted anywhere convenient outside the hazard zone,
taking into account the access requirements for test and maintenance.
3.3.2 MOUNTING
440F-C251P (Surface Mounted)
440F-C251D (Din Rail Mounted)
35MM DIN RAIL MOUNTING
45.5
73
120
A1 + Z2 M C 13 23 31
A2
-- Z 1 MC 14 24 32
115mm
130mm
115mm
130mm
4 x M4 Fixing Holes
Pg16/21
Pg16/21
75mm
4.6 Reset terminal MC-MC
These terminals are used for a number of different functions (surface mount supplied jumpered,
DIN rail supplied without jumper). Without the jumper the terminals can be connected to positively
guided normally closed auxiliary contacts on the machine contactors to provide monitoring of the
contactors in dual channel control systems. If one contactor fails to isolate the power at
de-energisation of its control coil, the Safedge system will not allow the other contactor to be
energised until the fault has been rectified. Fit a jumper between these terminals on the DIN rail
unit if this function is not required.This terminal is also used for auto/manual reset. If the MC-MC
terminal is left jumpered or connected up to the contactors normally closed contact only, the unit
is in automatic reset mode. In automatic reset mode the output is achieved solely by removal of
the actuating force. The out put is also achieved at power up of the actuator (when there is no
actuation force present). If a spontaneous restart may generate a risk, based on the result of a
risk assessment to EN1050, then this mode must not be used. See EN 60204 Pt.1 and EN954
Pt.1. For manual reset mode a normally open spring return (not latching) push button must be
connected across the MC-MC terminals or in series with the contactors normally closed. When
the actuating force is removed, the unit will not operate until the button is pressed. The button
will also have to be pressed after power up of the control unit.
4.7 Profile connection to control units
These terminals are used to connect the Profile to the:-
Z1 = Brown (inner conductor).
Z2 = White (outer connector).
Refer to 5.3 APPLICATIONS.
NOTE: Profile must be terminated with a 6KΩ Resistor (yellow) for series connection. When two
profiles are connected directly to Z1 and Z2 (parallel) then each profile should be terminated with
a 15K resistor (blue).
Connection in Parallel & Series
ALTERNATIVE CONNECTION METHOD
CONNECTING IN PARALLEL
A maximum of two profiles can be connected in parallel to
assist in ease of wiring in certain applications.
Uses 15K resistor (blue)
CONNECTING IN SERIES
If more than one profile is to be used they are normally connected
in series as shown.
Uses 6K8 resistor (yellow)
15 12
4.0 ELECTRICAL CONNECTIONS - Safedge control unit
440F-C251P (Surface Mounted)
440F-C251D (Din Rail Mounted)
A1 + Z 2 MC 13 23 31
A2
-- Z1 MC 14 24 32
4.3
4.14.2
4.7
4.6
4.5
4.4
SUPPLY
FUSE
500mA
110V
230V
STOP (RED)
OPEN (YELLOW)
RUN (GREEN)
4.1
SUPPLY FUSE
500mA
SAFETY FUSES
2A
4.2
L
110V
230V
N
ve ve
+--
31 32 13 14 23
24
4.3 4.4 4.5
4.6
4.7
STOP
RED
OPEN
YELLOW
LED INDICATION
RUN
GREEN
Z1 Z2 MC MC
CONTROL UNIT INSTALLATION AND WIRING - (Follow steps 4.1 to 4.7 for correct installation)
IMPORTANT: Wiring must be in accordance with the National Electric Code and applicable local codes
and ordinances
4.1 Mains selector switch
If using a 110V AC or a 230V AC supply, the voltage selector switch should be set as appropriate
before turning the power on. The unit is set to 230V AC when manufactured.
4.2 Mains input terminal LN (A1, A2, )
If a 110V AC or 230V AC supply is used it should be wired, together with a protective earth
(ground) to the terminals shown. The size of the protective earth (ground) wire should be at least
equal to that of the supply wire. Also check (4.1). If these terminals are used, ignore (4.3).
4.3 24V AC/DC input terminal +ve and -ve
If a 24V AC/DC supply is being used, the supply should be connected to these terminals,
ensuring that the correct polarity is observed. Do not make any connections to the terminals
of (4.2). Where a 24V AC or DC supply is used, it must be isolated from the mains supply in
accordance with international electrical safety pratice (IEC 364-4-41). One pole should be
earthed. For 24V DC the negative pole should be earthed (grounded). With 24V AC the earthed
(grounded) pole of the power supply should be connected to the -ve terminal.
4.4 Aux Output terminal 31 and 32
This terminal provides an auxiliary normally closed contact (i.e. closed when the green “Run”
light is off) which is suitable for indication or for alarm devices. As this is an auxiliary, it must not
be connected to the safety circuit.
4.5 Safety Output terminal 13, 14, 23 and 24
These are volt free contacts for connection to the machine safety circuits i.e, they are connected
in series with the machine contactor control circuit. (Max. rating 2A at 250V AC). Both of these
safety circuits are internally fused but must also be externally protected with a 2A quick acting fuse.
If one contactor is being used, terminals 13 and 24 are required and terminals 14 and 23 should
be jumpered together. For 2 contactors with 2 independent control circuits (i.e. a dual channel
system), use 13-14 for one contactor and 23-24 for the other. For 2 contactors, also see (5.3).
13 14
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