Protection Relays Intrinsically Safe Relays ISS-102 SERIES Two-Channel Intrinsically Safe Switch Description The ISS-102 is a two-channel, intrinsically-safe switch designed for multiple uses including a pump-up/pump-down (latching) controller or two-channel switch. LEDs indicate the state of the intrinsically-safe inputs and output relays and user-selectable options are available including a variable resistance threshold for oat inputs. fl The ISS-102 enclosure is surface or DIN rail mountable. -LC Each input channel is active when the corresponding switch is closed. When the lag input (CH2) is activated, the output closes. Applying latching logic, the output contact remains closed until the lead (CH1) and the lag (CH2) inputs are deactivated. Sensitivity is fixed at 100kOhms with a debounce time delay of 2 seconds. -DCS This dual-channel switch has two Form A output relays. Two LEDs illuminate the output state of their respective Form A relay. Resistance probes or switches can be used on its inputs. Wiring Diagrams Sensitivity is fixed at 100kOhms with a debounce time delay of 0.5 seconds. 120VAC -MC By selecting the proper functionality through the DIP 120VAC switches, you can define a pump-up or pump-down, single or dual channel non-latching switch. The sensitivity adjustment LOAD LOAD LOAD 2 1 (4.7k-100kOhms) allows you to define the input impedance at 1 2 3 1 9 2 3 which the output relays (one Form A & one Form C) will change state, with a debounce time delay of 0.5 or 2 seconds. FORM A Features & Benefits FORM A FEATURES BENEFITS ISS-102A ISS-102AA Finger-safe terminals Meets IEC 61000 safety requirements Compact design for DIN Allows flexiblility in panel installation rail or surface mount CH1 Com CH2 CH1 Com CH2 LED status indicator Visual indication of relay engagement 4 5 7 6 4 5 7 6 Flexibility for pump up/pump down latching Two input channels controller or two-channel switch applications Ordering Information See See Notes Notes 1 & 2 1 & 2 MODEL LINE VOLTAGE DESCRIPTION ISS-102A-LC 120VAC Latching Controller ISS-102AA-DCS 120VAC Dual Channel Switch ISS-102ACI-MC 120VAC Multi-function Controller ISS-102C-M-LC 120VAC MSHA* evaluated See Note 3 See Note 3 ISS-102CCI-M-MC 120VAC MSHA* evaluated * Mine Safety and Health Administration For more wiring diagrams and notes, see next page. 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062116 www.littelfuse.com/iss102Protection Relays Intrinsically Safe Relays ISS-102 SERIES Wiring Diagrams (continued) 120VAC 120VAC 120VAC 120VAC MAX LOAD LOAD 2 2 LOAD LOAD 1 LOAD 120VAC MAX. 1 1 1 2 3 LOAD 3 1 8 2 3 LOAD 1 8 2 3 4 LOAD LOAD 2 3 FORM A FORM C FORM C 10 11 12 10 11 12 ISS-102C-M NOTES: FORM C FORM C 1. Maximum distance between unit and switch ISS-102ACI ISS-102CCI-M contact is 10,000 feet. CH1 Com CH2 4 5 7 6 4 5 7 6 2. All non-intrinsically-safe wiring shall be separated from intrinsically-safe wiring. Description of 4 5 7 6 special wiring methods can be found in the National Electrical Code ANSI/NFPA 70, Article 504 Intrinsically-Safe Systems. Check your state and local codes for additional requirements. 3. All switch contacts shall be non-energy storing, containing no inductance or capacitance. See See See Notes Notes Notes 1 & 2 1 & 2 1& 2 See Note 3 See Note 3 See Note 3 Specifications Functional Characteristics Provides Intrinsically-Safe Debounce Time 0.5 or 2 seconds Circuits in the Probe Sense Voltage 5vdc pulsed following locations: Division 1 and 2 Output Characteristics Class I, Groups A,B,C,D Output Contact Rating Class II, Groups E,F,G Pilot Duty 180VA 120VAC, C150 Class III General Purpose 5A 120VAC Entity Parameters V = 16.8V Po=Voc*Isc oc Relay Contact Life (Electrical) 100,000 cycles min. rated load I = 1.2mA 4 sc Relay Contact Life (Mechanical) 10,000,000 cycles L = 100mH a Output Relay Type C = 0.39uF a ISS-102A-LC One Form A Standards Passed ISS-102AA-DCS Two Form A Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air. ISS-102ACI-MC One Form A & One isolated Form C Radio Frequency Immunity (RFI) IEC 61000-4-3, Level 3, 10V/m ISS-102C-M-LC One Form C Fast Transients IEC 61000-4-4, Level 3, 4kV input power ISS-102CCI-M-MC Two Form C (one isolated) Safety Mark General Characteristics UL UL913 Sixth Edition (File E233355) Temperature Range -20 to 55C (-4 to 131F) (except Models ISS-102C-M-LC & Maximum Input Power 2 W ISS-102CCI-M-MC which have been Wire Range 12 to 20 AWG evaluated by MSHA) Terminal Torque 3.5 to 4.5 in.-lbs. (max. 4.5 in.-lbs.) Dimensions H 88.9 mm (3.5) W 52.93 mm (2.08) D 59.69 mm (2.35) Weight 0.7 lb. (11.2 oz., 317.51 g) Mounting Method 35mm DIN rail or Surface Mount ( 6 or 8 screws) 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062116 www.littelfuse.com/iss102