Specialists in machinery safety
product
The Senator safety-limit switches have been developed to provide a range of options including metal or plastic cases in various sizes, a choice of snap-acting, slow-break/make or 2 x N/C contacts and a choice of actuator heads. The Senator range offers the option of rotating the head before installation to allow ease of mounting. Some lever switches also incorporate a ‘programmable head’ allowing operation of the contacts when the lever is operated centre to right, centre to left or either way. The Imp offers the safety-switch performance of bigger units in a compact case. Designed with two mounting-hole options and a choice of actuator positions, the Imp will fit in the most confined spaces. Guardmaster limit switches can be used for applications other than guard doors, for example on moving machine beds, crane arms, etc. Operation of the limit switches is achieved by the sliding action of the guard or other moving objects depressing the plunger or lever. It is important that, upon actuation, the guard or other moving objects should not pass completely over the switch and allow the plunger or lever to return to its original position.
Senator & Imp safety limit switches
features
(Imp only)
Large selection of actuator heads Positive-operation, forced disconnection of contacts Contacts, 1 x N/C + 1 x N/O or 2 x N/C
20/22 30
Types: Ci11, Ci21, Ci31
=
44,5
20/22 30
50
1xM16
= 30
=
20/22 30
25
1xM16
=
(Ø)
=
30
(Type Ci12 - slow break make) 0 25° 46°(P) 70° 21/22 13/14 35°
(Type Ci14 - slow break make) 0mm 1.8 3.2(P) 21/22 13/14 3
(Type Ci21 - snap action) 0mm 3.1(A) 21/22 13/14 21/22 13/14 1.5
(Type Ci22 - snap action) 0 25° 60°(P) 70° 21/22 13/14 21/22 13/14 12°
(Type Ci24 - snap action) 0mm 1.8 4.5(P) 5 21/22 13/14 21/22 13/14 0.9
(Type Ci26 - snap action) 0mm 9.8(A) 21/22 13/14 21/22 13/14 4.9
(Type Ci32 - slow break) 0 25° 46°(P) 11/12 21/22
(Type Ci34 - slow break) 0mm 1.8 3.2(P) 11/12 21/22
(Type Ci36 - slow break) 0mm 5.3(A) 11/12 21/22
Contact Closed
Contact Open
Contact Closed
(Ø) = 2 ELONGATED HOLES Ø 4,3 x 8,3 ON 22MM CENTRES, 2 HOLES Ø 4,3 ON 20MM CENTRES
Contact Open
5
5
Contact Closed
(A) = CAM DISPLACEMENT/CONTACT OPERATION
20/22 30
=
1xM16
=
30
Types: Ci16, Ci26, Ci36
20/22 30
= 12,5
Types: Ci 17, Ci 27, Ci 37
(Type Ci16 - slow break make) 0mm 9.8(A) 17.2(P) 21/22 13/14 16.1
Contact Open
25
95,5
(Ø)
4
25
(Type Ci11 - slow break make) 0mm 3.1(A) 5.6(P) 21/22 13/14 5.2
Contact Open
(Ø)
20 108 1xM16
=
(Ø)
4
25
Types: Ci14, Ci24, Ci34
7.8(P)
Ø14
Ø22
Types: Ci12, Ci22, Ci32
(Type Ci31 - slow break) 0mm 3.1(A) 5.6(P) 11/12 21/22
40
Ø8
12,5 2,5 5,5
22
35.5 53,5
30,5 1xM16 = 30
(Ø)
12,5
31 2,5
41
Ø11
25
2
6 31
3,5
12,5
Ø19
104,5 4
12,5
40 24
74,5 4
5.5
85 4
dimension drawings
Conforms to EN 1088, EN 60947-5-1, EN 292, EN 60204-1
(Type Ci17 - slow break make) 0mm 6.5(A) 11.3(P) 21/22 13/14 10.5 (Type Ci27 - snap action) 0mm 6.5(A) 21/22 13/14 21/22 13/14 3
22.5(P)
(Type Ci37 - slow break) 0mm 6.6(A) 11/12 21/22 Contact Open
Contact Closed
15.7(P)
11.6(P)
Contact Closed
(P) = CONTACT POSITIVE OPENING POINT
Telephone: +44 (0)1942 255166
Senator contact arrangements
or
Ci range – options include
CP range – options include
roller, roller lever, plunger, roller plunger and cranked lever.
roller, roller lever, plunger.
CX range – options include
CM range – options include
roller, roller lever, plunger.
roller, roller lever, plunger.
Cam displacement
All Senators have the option of rotating the head 360° in 90° increments to give simple installation. Roller-lever operated Senators also have the option to mount the roller to the front or back of the lever.
The actuating cam should be profiled at 30° for optimum operation. (Note: plunger-type switches operate from a flat profile.)
Operating examples
(A) 30°
30°
30°
30°
30° 60°
60°
60°
60°
Adjustable lever arms
55
14
Ø22
1xM20 =
30
36
=
40
1xM20 =
30
60
40
=
2xØ5,3 29,5
1xM20 =
36
30 40
3xM20
=
41
=
30
Types CP12, CP22, CP32
Types CP14, CP24, CP34
Types CX14, CX24, CX34
(Type CP12 - slow break make) 0 23° 42°(P) 80° 21/22 13/14 33°
(Type CP14 - slow break make) 0mm 1.8 3.2(P) 5.5 21/22 13/14 3
(Type CX14 - slow break make) 0mm 1.8 3.2(P) 5.5 21/22 13/14 3
(Type CP21 - snap action) 0mm 3.1(A) 21/22 13/14 21/22 13/14 1.5
(Type CP22 - snap action) 0 23° 58°(P) 21/22 13/14 21/22 13/14 11°
(Type CP24 - snap action) 0mm 1.8 4.5(P) 21/22 13/14 21/22 13/14 0.9
(Type CP32 - slow break) 0 23° 42°(P) 11/12 21/22
(Type CP31 - slow break) 0mm 3.1(A) 5.6(P) 11/12 21/22 Contact Open
Contact Open
Contact Closed
(Ø) : 2 ELONGATED HOLES Ø 5,3 x 7,3
80°
Contact Closed
(A) = CAM DISPLACEMENT/CONTACT OPERATION
Fax: +44 (0)1942 523259
(Type CP34 - slow break) 0mm 1.8 3.2(P) 11/12 21/22 Contact Open
(P) = CONTACT POSITIVE OPENING POINT
5.5
5.5
Contact Closed
3xM20
41
=
Types CX11, CX21, CX31 (Type CX11 - slow break make) 0mm 3.1(A) 5.6(P) 21/22 13/14 5.2
(Type CX24 - snap action) 0mm 1.8 4.5(P) 5.5 21/22 13/14 21/22 13/14 0.9
(Type CX21 - snap action) 0mm 3.1(A) 21/22 13/14 21/22 13/14 1.5
(Type CX34 - slow break) 0mm 1.8 3.2(P) 11/12 21/22
(Type CX31 - slow break) 0mm 3.1(A) 5.6(P) 11/12 21/22
Contact Open
5.5
Contact Closed
=
64
30
64
Types CP11, CP21, CP31
80°
(Ø)
=
(Type CP11 - slow break make) 0mm 3.1(A) 5.6(P) 21/22 13/14 5.2 7.8(P)
Ø12
Ø10 Ø
103 2xØ5,3
29,5
14
37
(Ø)
60
116 29,5
Ø10
63
50
2xØ5,3
(Ø) 129
(Ø)
60
41
16
108
Ø12
4
48,5
39
60
4
30
6
88,5
16
Contact Open
7.8(P)
9
Contact Closed
(Ø) : 2 ENONGATED HOLES Ø 5,2 x 6,2 (A) = CAM DISPLACEMENT/CONTACT OPERATION (P) = CONTACT POSITIVE OPENING POINT
41
Actual size of Imp
54
Reverse mounting of the operating lever, CM Senator only.
for 45° steps through 360°
for 5° steps through 360°
R
IMP
2 5 0 Va c 2 A 1 0 0 Va c 5 A Made in England
25 Lever arms can be adjusted to operate from various angles to the switch body.
Imp contact arrangements
Operating configurations and how to set CM lever switches only.
Operating configurations and how to set CP & CX lever switches only.
3xM20
41
=
=
64
8 34
Types CX12, CX22, CX32
41
(Type CX32 - slow break) 0 24° 43°(P) 11/12 21/22
(Type CM31 - slow break) 0mm 3.5(A) 5.9(P) 11/12 21/22 Contact Open
8.1(P)
Contact Closed
(Ø) : 2 ENONGATED HOLES Ø 5,3 x 7,3
=
33,5 62
1xM20 =
30 40
Types CM12, CM22, CM32 (Type CM12 - slow break make) 0 23° 40°(P) 90° 21/22 13/14 33° (Type CM22 - snap action) 0 23° 58°(P) 21/22 13/14 21/22 13/14 11° (Type CM32 - slow break) 0 28° 62°(P) 11/12 21/22 Contact Open
90°
90°
Contact Closed
(A) = CAM DISPLACEMENT/CONTACT OPERATION
=
2xØ5,3 33,5
1xM20 =
44
30 40
Types CM14, CM24, CM34 (Type CM14 - slow break make) 0mm 2 3.4(P) 21/22 13/14 3.2 (Type CM24 - snap action) 0mm 2 4.7(P) 21/22 13/14 21/22 13/14 0.9 (Type CM34 - slow break) 0mm 2 3.4(P) 11/12 21/22 Contact Open
6
2xM3
=
20 15 25
Type Imp 1 & 2 (Type Imp 1 & 2 - slow break make) 0 1 5 11/12 23/24 2.5
6
6
Contact Closed
2.4
2xM4 54 37.7 4
60
107
37
(Ø)
60
60
Types CM11, CM21, CM31
(Type CM21 - snap action) 0mm 3.2(A) 21/22 13/14 21/22 13/14 1.5
Contact Closed
2xØ5,3 30 40
(Type CX22 - snap action) 0 26° 58°(P) 70° 21/22 13/14 21/22 13/14 11°
Contact Open
Ø11
133
1xM20 =
(Type CM11 - slow break make) 0mm 3.2(A) 5.9(P) 21/22 13/14 5.3
(Ø) : 2 ENONGATED HOLES Ø 5,2 x 6,2 (A) = CAM DISPLACEMENT/CONTACT OPERATION (P) = CONTACT POSITIVE OPENING POINT
42
33,5 44
(Type CX12 - slow break make) 0 26° 42°(P) 70° 21/22 13/14 36°
70°
10.3
Ø10
17
(Ø)
120 2xØ5,3
30
Ø22
63
(Ø)
119
(Ø)
Ø12
60,5
34,5
5
57 41
50
Ø19
5
5MM ROLLER TRAVEL
17
22 15 5,5
Contact Open
Contact Closed
(P) = CONTACT POSITIVE OPENING POINT
Telephone: +44 (0)1942 255166
4 15.2 23.3
Actuator material Protection Conduit entry Operating temperature Fixing Mounting Mechanical life Colour
CSA EN 60947-5-1, EN 1088, EN 292, EN 60204-1 1 x N/C + 1 x N/O or 2 x N/C AC 15 - DC 13 240 V 3A 250 V 0.27 A 10 A >2 x 2 mm (Ui) 500 V (Uimp) 6000 V 3 Various (see diagrams) (Ci, CP) Glass-reinforced plastic, (CX, CM) Die-cast alloy Stainless steel (Ci, CP) IP65, (CX, CM) IP66 (CM) 1 x M20, (CX) 3 x M20, (Ci) 1 x M16 -25°C to +70°C (Ci) M4, (CP, CX, CM) M5 Any position 1 x 106 Red and black
Imp Approvals Conforming to standards Safety contacts Utilisation category AC (Ue) (le) DC Max. switched current/voltage/load Thermal current (lth) Minimum current Safety contact gap Rtd insulation voltage Rtd impulse withstand voltage Auxiliary contacts Pollution degree Actuator travel for positive opening
BG, CSA EN 60947-5-1, EN 1088, EN 292, EN 60204-1 1 x N/C positive break AC 15 500 V 250 V 100 V 1A 2A 5A 250 V 0.5A, 24 V 2 A 500 V/500 VA 10 A 5 V 5 mA DC >2 x 2 mm (Ui) 500 V (Uimp) 2500 V 1 x N/O 3 2.5 mm
Type Contacts Plastic case limit switches SB = Slow break contacts, SA = Snap acting contacts, SBM = Slow break before make contacts Senator (Ci-31) 2N/C (SB) Senator (Ci-21) 1N/C+1N/O (SA) Senator (Ci-11) 1N/C+1N/O (SBM) Senator (Ci-32) 2N/C (SB) Senator (Ci-22) 1N/C+1N/O (SA) Senator (Ci-12) 1N/C+1N/O (SBM) Senator (Ci-34) 2N/C (SB) Senator (Ci-24) 1N/C+1N/O (SA) Senator (Ci-14) 1N/C+1N/O (SBM) Senator (Ci-36) 2N/C (SB) Senator (Ci-26) 1N/C+1N/O (SA) Senator (Ci-16) 1N/C+1N/O (SBM) Senator (Ci-37) 2N/C (SB) Senator (Ci-27) 1N/C+1N/O (SA) Senator (Ci-17) 1N/C+1N/O (SBM) Senator (CP-31) 2N/C (SB) Senator (CP-21) 1N/C+1N/O (SA) Senator (CP-11) 1N/C+1N/O (SBM) Senator (CP-32) 2N/C (SB) Senator (CP-22) 1N/C+1N/O (SA) Senator (CP-12) 1N/C+1N/O (SBM) Senator (CP-34) 2N/C (SB) Senator (CP-24) 1N/C+1N/O (SA) Senator (CP-14) 1N/C+1N/O (SBM) Senator (CP-11-Ex) 1N/C+1N/O Senator (CP-14-Ex) 1N/C+1N/O Imp 1 (roller parallel to switch front) 1N/C+1N/O Imp 2 (roller parallel to switch side) 1N/C+1N/O
Fax: +44 (0)1942 523259
Cable entry
Part no.
1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM16 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20 pre-wired pre-wired 3xbreakouts 3xbreakouts
931164831 931162831 931161831 931164832 931162832 931161832 931164834 931162834 931161834 931164836 931162836 931161836 931164837 931162837 931161837 921164821 921162821 921161821 921164822 921162822 921161822 921164824 921162824 921161824 922164851 922164854 18001 18002
application example
technical specifications ordering details
Senator Approvals Conforming to standards Safety contacts Utilisation category AC (Ue) (le) DC (Ue) (le) Thermal current (lth) Safety contact gap Rtd insulation voltage Rtd impulse withstand voltage Pollution degree Actuator travel for positive opening Case material
Break contact minimum force Maximum actuator travel Maximum actuation speed Maximum actuation frequency Case material Actuator material Protection Conduit entry Operating temperature Fixing Mechanical life Electrical life Colour
10 N 5 mm 160 mm per sec 2 cycle per sec UL approved glass-filled polyester Acetal IP30 3 x breakout -25°C to +80°C 2 x M3 front or 2 x M4 top 10 x 106 1 x 106 Red
Note: The safety contacts of the Guardmaster switches are described as normally closed (N/C), i.e. with the guard closed, actuator in place (where relevant) and the machine able to be started.
Type Contacts Metal case limit switches SB = Slow break contacts, SA = Snap acting contacts, SBM = Slow break before make contacts Senator (CX-31) 2N/C (SB) Senator (CX-21) 1N/C+1N/O (SA) Senator (CX-11) 1N/C+1N/O (SBM) Senator (CX-32) 2N/C (SB) Senator (CX-22) 1N/C+1N/O (SA) Senator (CX-12) 1N/C+1N/O (SBM) Senator (CX-34) 2N/C (SB) Senator (CX-24) 1N/C+1N/O (SA) Senator (CX-14) 1N/C+1N/O (SBM) Senator (CM-31) 2N/C (SB) Senator (CM-21) 1N/C+1N/O (SA) Senator (CM-11) 1N/C+1N/O (SBM) Senator (CM-32) 2N/C (SB) Senator (CM-22) 1N/C+1N/O (SA) Senator (CM-12) 1N/C+1N/O (SBM) Senator (CM-34) 2N/C (SB) Senator (CM-24) 1N/C+1N/O (SA) Senator (CM-14) 1N/C+1N/O (SBM)
Cable entry
Part no.
3xM20 3xM20 3xM20 3xM20 3xM20 3xM20 3xM20 3xM20 3xM20 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20 1xM20
951164821 951162821 951161821 951164822 951162822 951161822 951164804 951162804 951161804 911164811 911162811 911161811 911164812 911162812 911161812 911164814 911162814 911161814
Note: Replacement heads and actuators are available. Please contact Guardmaster for further details. For Ex and details refer to the Ex and interlock switches section.
43
