File no. LR90200 Description mats and edges MC3, MC4 and Safety Mat Controllers Both metal enclosure and DINrail mount models available Control reliable Remote access to status, test and reset functions Built-in diagnostic indicators The Safety Mat controllers, MC3 and MC4 are used in conjunction with fourwire, normally open, mats where perimeter guarding is required. Their control reliable, surface-mount design sends a stop signal to the guarded machine whenever an object with sufficient weight is detected on the active mat surface. Also when the controller detects any of the mat wires are missing, broken, or mis-connected a stop signal is generated. When combined with a fourwire mat these controllers improve productivity while providing access guarding. Full visibility of and accessibility to the work area is always maintained. STI mat controllers meet the requirements of ANSI B11.19-1990 for mats controllers and OSHA 1910.212 for general machine guarding. Universal power input (MC4) Selectable Automatic Start or Start/Reset Interlock Mode Circuitry monitors mat wiring integrity Options Lid-mounted reset key switch (MC4) Quick-disconnect mat fittings (MC4) E Go to the Engineering Guide in this catalog for in-depth information on standards and use of this product. D10
mats and edges Models Available This DIN-rail mount controller provides inputs and monitoring for six separate mat zones with a maximum combined area of 300 square feet. These six zones share a common output. Removable terminal blocks simplify installation when the controller is mounted on the DIN rail. Unit operates from 24 VDC only. MC3 This DIN-mount single zone mat controller has removable terminal blocks and operates from 24 VDC only. MC4 This single zone mat controller is housed in a NEMA 4, 12 (IP65) polyurethane-painted steel enclosure. Input power options include 100 to 240VAC - Auto Selecting, or 24 VDC. Additional Guarding Requirements A mat system is often only one part of a machine guarding solution. If the mat does not protect all access to the point of operation, additional guarding must be used. Safety mat systems should only be used to detect the presence, not the absence, of a force. Perimeter Guarding Requirements For perimeter guarding installations, the guarded machine or robot controller must be wired such that any stop signal generated by the mat system will cause an immediate stop of the hazardous motion. The machine or robot must only be restarted by the actuation of a manual reset switch. This reset switch must be located outside the area of hazardous motion and positioned such that the hazardous area can be observed by the switch operator. The purpose of this arrangement is to prevent a machine or robot from automatically restarting once the sensing weight is no longer detected by the mat sensing area. For the Latest Information Try Our Fax Back System at 1/916/431-6544 On the Internet: www.sti.com E-mail: sales@sti.com D11
Specifications MC3 MC4 Performance Category 3 Safety Device: Yes Yes Yes Operating Area: Up to 300 sq. ft. (27.9 square meters) Up to 300 sq. ft. (27.9 square meters) Up to 300 sq. ft. (27.9 square meters) of mats for each controller of mats for each controller of mats for each controller Response Time: < 30 Ms (including mat response) < 30 Ms (including mat response) < 30 Ms (including mat response) Indications: 1 green = run, 1 red = stop 1 green = run, 1 red = stop, 1 green = run, 1 red = stop, 1 yellow = interlock, 1 orange = fault 1 green = mat clear 1 green = mat clear 6 orange = mat zone indicators Operational Mode Selectable: Automatic Start or Automatic Start or Automatic Start or Start/Restart Interlock Mode Start/Restart Interlock Mode Start/Restart Interlock Mode Electrical Power Input: 24 VDC ±15% < 2 VA 24 VDC ±15% < 3 VA 100 to 240 VAC, 50/60 Hz. Autoselecting ±15% or 24 VDC ±15% < 3 VA Safety Inputs: Connections for up to One 4-wire mat input Connections for up to six, 4-wire mats six, 4-wire mats Relay Outputs: Safety rated: 2 NO, 1 NC Safety rated: 2 NO, 2 NC Safety rated: 2 NO, 2 NC Non- rated: 1 NO, 1 NC Terminal Blocks: Removable with Removable with Cage clamp terminal strip pressure point screw pressure point screw Maximum Switched Current: 230 VAC, 6A, 1500 VA Max. 230 VAC, 6A, 1500 VA Max. Relay Life: Mechanical = 100M operations Mechanical = 10M operations Mechanical = 10M operations Options Reset Function: Remote (user supplied) Remote (user supplied) Lid mounted key-switch, Remote (user supplied) pushbutton or key-switch Mat Input Connectors: 6 mat inputs Up to six quick- disconnect connectors Power Input and Relay Output Connector: No No Yes Enclosure: Polycarbonate Polycarbonate Polyurethane-painted 14 ga. steel Mounting: 35mm DIN-rail 35mm DIN-rail Environmental Protection Rating: IP20 IP20 NEMA 4, 12, IP65 Operating Temp: 14 to 131 F (-10 to 55 C) 14 to 131 F (-10 to 55 C) 14 to 131 F (-10 to 55 C) Relative Humidity: 90% 90% 90% Vibration: 5-60 Hz at 5g max on three axis 5-60 Hz at 5g max on three axis 5-60 Hz at 5g max on three axis Shock: 10g for 0.016 seconds 10g for 0.016 seconds 10g for 0.016 seconds 1000 shocks for each axis on 3 axis 1000 shocks for each axis on 3 axis 1000 shocks for each axis on 3 axis Shipping Weight: 1.5 lbs. (0.68 kg) 0.8 lbs. (0.22 kg) Approx. 9 pounds (4 kg.) Standards Conformity: CSA, NRTL/C TUV, CE, NRTL/C TUV, CE, NRTL/C Designed to meet or exceed: EN1760-1:1997 EN 954 ANSI/RIA 15.06-1992 ANSI/B11-19-1990: OSHA 1910-217B Specifications are subject to change without notice. E Go to the Engineering Guide in this catalog for in-depth information on standards and use of this product. D12
R Dimensions in/mm STI 6-zone SafetyMat Controller WARNING SAFETY DEVICE 3.36 85.5 TOP VIEW 5.85 148.6 2.95 75.0 4.33 109.9 2.40 61.2 FRONT VIEW 5.27 133.9 SLOT.18 X.23L 4.4 X 5.7L 1.39 35.0 RT SIDE VIEW BOTTOM VIEW MC3 15.25 mm 61.2 mm 55 mm 75 mm 38 mm 98 mm 110 mm 1.5 mm Bottom View 35.5 mm Side View For the Latest Information Try Our Fax Back System at 1/916/431-6544 On the Internet: www.sti.com E-mail: sales@sti.com D13
Dimensions in/mm MC4 1.50 38.1 (2 plcs) 2.50 63.5 10.80 274.3 0.50 12.7 0.750 19.05 0.895 22.73 0.875 22.23 10.10 256.5 7.56 192 9.30 236 1.750 44.5 0.90 22.9 Ø0.312 7.92 Thru Hole (8 places) 1.250 31.75 0.520 13.21 2.00 50.8 Ø0.875/1.130 22.23/28.70 Combo Knockout (3 places) 4.375 111.1 2.825 71.76 5.050 128.3 2.048 52.02 4.00 101.6 5.00 127 5.30 134.6 0.500 12.7 3.50 88.9 Ø0.531 13.49 Combo Knockout (6 places) 0.30 7.62 Typ. 0.75 19.1 Detail A Butterfly Latch 4.00 2.35 1.00 25.4 0.750 19.1 Top Rivet 0.503 12.78 1.20 30.5 0.75 19.1-6.31 0.220 5.59 95 0.094 2.39 Detail A (Clamp Wing E Go to the Engineering Guide in this catalog for in-depth information on standards and use of this product. D14
Safety Standards and Precautions An STI mat controller is a general purpose, mat control device and is not designed to guard any specific type, model or brand of machine. All related functions of the guarded machine controls including pneumatic, electric, logic or hydraulic controls must be control reliable. An STI mat controller, when combined with a four-wire mat meets ANSI/RIA R15.06-1999, ANSI B11.19-1990 and the following applicable OSHA standards. When used with mechanical power presses, OSHA standard 1910.217(c) applies. For other applications the requirements of section 1910.212 apply. Only use a mat controller and four-wire mat system on machinery that stops consistently and immediately anywhere in its cycle or stroke. Never use a mat controller and four-wire mat system on a fullrevolution clutched press or machine. Access to the point of operation or hazardous machine area not protected by the mat controller and four-wire mat system must be guarded by fencing, barriers or other appropriate methods. The purchaser, installer and employer are responsible for meeting all local state and federal government laws, rules, codes or regulations relating to the proper use, installation, operation and maintenance of this control and the guarded machine. See Installation and Operation Manual for additional information. All application examples described are for illustration purposes only. Actual installations will differ from those indicated. Ordering Information Use the chart below to specify a specific model. For example, a MC4-0116 would be a MC4 controller with no input connector, a key-switch, 100-240 VAC auto-selecting and 6 mat connectors. Configuration MC3 Six-zone Safety Mat Controller, IP20, DIN rail mount, 24VDC, removable terminal blocks 24VDC, 2 N0 & 2 NC outputs, 35mm DIN rail mount, removable terminal blocks, automatic start or start/restart, interlock operating mode Configuration MC4 MC4 controller with features outlined below Connectors (MC4 only) 0 No input connector 1 Connector for power input and output contacts Key Switch (MC4 only) 0 No key switch 1 Lid mounted key-switch Power Input (MC4 only) 0 24 VDC 1 100 to 240 VAC auto-selecting Input Connectors (MC4 only) 0 No mat input connectors 1 to 6 mat connectors (specify a number) For the Latest Information Try Our Fax Back System at 1/916/431-6544 On the Internet: www.sti.com E-mail: sales@sti.com D15