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SECTION 18 www.idemsafety.com IDEM VIPER SAFETY RELAYS 162 VIPER Safety Relays Type: SCR-21-i (with added diagnostics) DESCRIPTION: The Viper Safety Relays range from IDEM are designed to meet the latest safety standards and offer enhanced LED diagnostics and simplified wiring. Applications include the monitoring of safety interlock switches (guard door monitoring), emergency stop devices and sensors. The SCR-21-i internal logic uses force guided relays to achieve cross monitoring, this ensures that a single fault does not lead to the loss of the safety function and that all faults are detected at or before the next safety demand. FEATURES: ● Outputs 2NC contacts and 1NO contact. ● Feedback circuit to monitor external contacts. ● Easy diagnosis of status via visual indication of LEDs. ● Up to PLe, SILCL 3, Category 4. ● Monitored manual or automatic start. ● Single and dual channel operation. ● Output expansion units available to increase number of outputs. BLOCK DIAGRAM AND ELECTRICAL CONNECTION: SPECIFICATIONS: STANDARDS EN ISO13849-1 EN ISO13849-2 EN62061 EN60204-1 EN ISO12100 POWER SUPPLY CIRCUIT Operating Voltage 24V AC/DC Operating Voltage Tolerance 85-110% Rated Supply Frequency 50Hz-60Hz Power Consumption 2.5W (24V AC/DC) CONTROL CIRCUITS Rated Output Voltage 24V DC (S11) Output Current 100mA (S11) Response Time 100ms Release Time 25ms Recovery Time 90ms OUTPUT CIRCUITS Rated Output Voltage 250V AC Maximum Current per Output 6A Maximum Total Current all Outputs 8A Safety Contact Breaking Capacity AC 250V, 1500V, 6A, Ohmic 230V, 4A for AC-15 DC 24V, 30W, 1.25A, Ohmic Minimum Contact Load 10V 10mA Minimum Contact Fuses 4A slow blow, 6A fast blow Contact Material AgSnO 2 Contact Service Life 10 x 10 6 GENERAL DATE Rated Impulse Withstand Voltage 4kV Rated Insulation Voltage 250V Degree of Protection IP20 Temperature Range -20C to +55C Degree of Contamination 2 Overvoltage Category III Weight 160gr (5.5 oz.) Mounting Any position Electrical Connection A1 A2 Power 24Vac/dc S11 Control Output S10 S13 S12 Control Inputs S21 Auto Reset Input S22 Manual Reset Input 13-14 Safety Output Contact 1 23-24 Safety Output Contact 2 41-42 Auxiliary Output Contact SAFETY CHARACTERISTICS EN62061 SIL3 ISO13849-1 Ple Category 4 PFH 4.1E-10 1/h (0.4% of SIL3 (1 E-07 1/h)) PFD Av. (T=20a) 3.6E-05 (3.6% of SIL3 (1 E-03) MTTFd 142a (High) DC Av. 99% (High) LED DIAGNOSTICS: WHEN SAFETY RELAY IN OPERATION Power Power applied to device Reset Reset Circuit is closed. CH1 External switch input 1 closed. CH2 External switch input 2 closed. K1 Internal relay safety output contacts closed. K2 Internal relay safety output contacts closed.
VIPER Safety Relays Type: SCR-21-i (with added diagnostics) DIMENSIONS: SECTION 18 MANUAL RESTART MODE (Dual Channel) GUARD: AUTOMATIC RESTART MODE (Single Channel) E-STOP: SELECTION CHART & ORDERING: SALES NUMBER TYPE TERMINAL TYPE SUPPLY VOLTAGE SWITCH INPUT CIRCUITS OUTPUT CONTACTS 280001 SCR-21-i Standard Screw Terminals 24Vac/dc 2NC 2NC 1NO 280001-P SCR-21-i Pluggable Screw Terminals 24Vac/dc 2NC 2NC 1NO www.idemsafety.com IDEM VIPER SAFETY RELAYS 163
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Providing Machine Safety for YOU at
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Contents SECTION 1 Safety Switches
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Safety Switches from IDEM ABOUT SAF
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Explosion Proof Non Contact Safety
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Explosion Proof Non Contact Safety
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Explosion Proof Emergency Stop Swit
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Explosion Proof Emergency Stop Swit
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KOBRA - Explosion Proof Tongue Inte
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Tongue Interlock Safety Switch Type
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Tongue Interlock Safety Switch Type
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KOBRA - Tongue Operated Switch Type
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KOBRA - Tongue Operated Switch Type
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KOBRA - Tongue Operated Switch (Met
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KOBRA - Stainless Steel Switch Type
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Hinge Interlock Safety Switch Type:
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Hinge Interlock Safety Switch Type:
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Guard Locking Safety Interlock Swit
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Guard Locking Switch Plastic Type:
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Guard Locking Switch Metal Type: SA
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Guard Locking Switch Metal Type: RA
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Guard Locking Switch Stainless Stee
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Guard Locking Switch Metal Type: SA
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Guard Locking Switch Metal Type: RA
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Guard Locking - Rear Manual Escape
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Guard Locking - Rear Manual Escape
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RFID Guard Locking Switch Metal Typ
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RFID Guard Locking Switch Stainless
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RFID Guard Locking Switch Plastic T
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RFID Guard Locking Switch Metal Typ
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RFID Guard Locking Switch Metal TYP
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RFID Guard Locking Switch S/Steel T
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Universal Gate Box with Safety Inte
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Gate Bolts for Tongue Switches: Typ
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Gate Bolts for Tongue Switches: GBL
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Gate Bolts for Non Contact Switches
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Kobra Tongue Switches Application E
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Kobra Tongue Switches Application E
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Accessories for: Tongue & Locking S
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Non Contact RFID Locking Switch Typ
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Non Contact RFID Locking Switch Typ
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Coded Non Contact Safety Interlock
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EUROCODE - Coded Non Contact Type:
Page 111 and 112: IDECODE - Coded Non Contact Type: C
Page 113 and 114: IDECODE - Coded Non Contact Type: R
Page 115 and 116: HYGIECODE - Coded Non Contact Type:
Page 125 and 126: Magnetic Non Contact Safety Interlo
Page 127 and 128: IDEMAG - Magnetic Non Contact Type:
Page 129 and 130: EUROMAG - Magnetic Non Contact: LPR
Page 131 and 132: IDEMAG - Magnetic Non Contact Type:
Page 133 and 134: HYGIEMAG - Magnetic Non Contact Typ
Page 143 and 144: Standalone Coded Non Contact Switch
Page 145 and 146: Standalone Coded Non Contact Switch
Page 147 and 148: RFID Coded Non Contact Type: SPF FE
Page 149 and 150: RFID Coded Non Contact Type: WPF FE
Page 151 and 152: RFID Coded Non Contact Type: LMF St
Page 153 and 154: RFID Coded Non Contact with Auto Te
Page 155 and 156: ‘T’ Port Connectivity Non Conta
Page 157 and 158: 8-Pin M12 Connection Box for Magnet
Page 159 and 160: Accessories: Non Contact Switches M
Page 161: VIPER Safety Relays FUNCTIONAL DESC
Page 165 and 166: VIPER Safety Relays Type: SCR-31-i
Page 167 and 168: VIPER Safety Relays Type: SCR-31P-i
Page 169 and 170: VIPER Safety Relays Type: SCR-73-i
Page 171 and 172: VIPER Safety Relays Type: SCR-31-42
Page 173 and 174: VIPER Safety Relays Type: SEU-31-i
Page 175 and 176: VIPER Safety Relays Type: SEU-31TD-
Page 177 and 178: Safety Relays Type: SCR-1 OVERVIEW:
Page 179 and 180: Safety Relays Type: SCR-3 OVERVIEW:
Page 181 and 182: Expansion Module for use with SCR-2
Page 183 and 184: Safety Relay OVERVIEW: The SCR-2H i
Page 185 and 186: Connection Examples IDEM VIPER Safe
Page 187 and 188: Connection Examples IDEM VIPER Safe
Page 189 and 190: IDEM VIPER DIN Rail Power Supply TY
Page 191 and 192: Grab Wire Safety Rope Switches: Gua
Page 193 and 194: Using Safety Rope Switches: Guardia
Page 195 and 196: Using Safety Rope Switches: Guardia
Page 197 and 198: Guardian Line Mini Duty Type: GLM-S
Page 199 and 200: Guardian Line Standard Duty Type: G
Page 201 and 202: Grab Wire Auto-Reset Trip Switch Ty
Page 203 and 204: Guardian Line Heavy Duty Type: GLHL
Page 205 and 206: Guardian Line Heavy Duty Type: GLHL
Page 207 and 208: Guardian Line Rope Switches: Access
Page 209 and 210: Python Line Series - Conveyor Belt
Page 211 and 212: Python Line Series - Conveyor Belt
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Python Line Series - Conveyor Belt
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Mini Belt Alignment Switches TYPE:
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2 Wire Safety Communication for Rop
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Safety Light Curtains FEATURES: ROB
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Safety Light Curtains Type: SLC-H H
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Safety Light Curtains Type: SLC-F a
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Safety Relay Type: SCR-31P-i (for u
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Standard Duty Emergency Stops Type:
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Heavy Duty Emergency Stops Type: GL
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Application Information Emergency S
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Safety Limit Switches Type: HLM (Di
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Safety Limit Switches Type: HLM (Di
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Safety Limit Switches Type: HLM-SS
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Safety Limit Switches Type: HLM-SS
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Safety Limit Switches Type: LSPS (P
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Safety Limit Switches Type: LSPS (P
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Safety Limit Switches Type: LSPS-R
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Safety Limit Switches Type: LSPM (P
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SECTION 27 www.idemsafety.com MICRO
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SECTION 27 www.idemsafety.com MICRO
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SECTION 28 SKORPION Trapped Key Int
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SECTION 28 www.idemsafety.com SKORP
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SECTION 28 www.idemsafety.com SKORP
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ACTUATORS FOR TONGUE INTERLOCK SWIT
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SECTION 28 PRODUCT DIMENSIONS: Bolt
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SECTION 27 www.idemsafety.com PRODU
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SECTION 27 www.idemsafety.com PRODU
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