R. STAHL IS1+ Digital Output Module for Zone 1 Ex i

Product Overview

The R. STAHL IS1+ digital output modules (9475/32-04) are designed for Zone 1 applications with Ex i intrinsic safety. These modules provide 4 logic outputs for controlling solenoid valves or indicator lights. An additional Ex i control input allows for safe shutdown up to SIL2. All outputs are protected against short circuits, electrically isolated from the system, and individually monitored for wire breaks and short circuits.

Key features include:

• 4 Ex i channels for solenoid valves up to 40 mA
• Ex ia outputs with line and error monitoring via LEDs
• SIL2 rated for error and status indication
• Zone 1 hot-swap capability

Technical Specifications

Explosion Protection

• Application Areas (Zones): 1, 2
• Ex Interface Zone: 0, 1, 2, 20, 21, 22
• Certifications: IECEx, ATEX, FM, cFM, Marine (ABS, BVIS, EU RO MR, KR, LR), CCC

Safety Values

Electrical Characteristics

• Number of Channels: 4 Ex i outputs
• Field Signal Connection: Blue plug-in terminals, 16-pole, 2.5 mm², screw or spring clamp with locking
• Control Input Connection: Blue plug-in terminals, 2-pole, 2.5 mm², screw or spring clamp with locking

Output Characteristics (Example for IIC)

Control Input

• Connection Terminals: X3 1, 2 (without electrical separation)
• Control Voltage for Outputs: > 2.2 V (for "STOP" function)
• Control Voltage for Outputs: < 0.7 V (for normal operation)

Auxiliary Power Supply

• Connection: BusRail types 9494
• Auxiliary Power Version: Ex ia intrinsic safety via BusRail
• Current Consumption: 210 mA
• Max. Power Consumption: 5 W

Electrical Separation

• Test Voltage: ≥ 1500 V AC
• Isolation Voltage (Module E/S to System): ≥ 500 V AC
• Isolation Voltage (Channels E/S to System): ≥ 500 V AC
• Isolation Voltage (Channels E/S to Ground): ≥ 500 V AC

Diagnostic Information

• Module Diagnostic Message: STOP (ARRÊT), RUN (MARCHE)
• Line Fault Monitoring: RUN (MARCHE)
• Test Current Signal: 0.2 ... 0.28 mA
• Output Error Behavior: Maintain last value

Environmental and Mechanical Data

Ambient Conditions

• Ambient Temperature: -40°C to +75°C (-40°F to +167°F)
• Storage Temperature: -40°C to +80°C (-40°F to +176°F)
• Max. Installation Altitude: < 2000 m
• Max. Relative Humidity: 95% (non-condensing)

Mechanical Characteristics

• Degree of Protection (IP): IP20 (IEC 60529)
• Housing Material: Polyamide 6GF
• Flammability Class: V2 (UL 94)
• Dimensions (L x W x H): 128 mm x 96.5 mm x 67 mm (5.04 in x 3.8 in x 2.64 in)
• Weight: 275 g (0.61 lb)
• Mounting Type: DIN rail NS 35/15 (DIN EN 60715)
• Mounting Position: Horizontal or vertical

Accessories

Plug-in Terminals

• 2.5 mm² with locking, 16-pole, screw connection, blue: For field signal connection. Part No.: 162702
• 2.5 mm² with locking, 16-pole, spring connection, blue: For field signal connection. Part No.: 162695

Other Accessories

• Labeling Strip: For plug-in terminals. Part No.: 162788
• Anti-vibration Mounting Kit: For environments with extreme vibrations. Part No.: 271920
• Screw Set: For anti-vibration supports. Part No.: 275516
• LED Indicator (Ex i): For intrinsic safety circuits. Part No.: 237972
• LED Indicator (Front Mount): For front mounting. Part No.: 240901

Related Products

• Electronic Relay Module (9174): For switching Ex e loads with intrinsic safety command. Part No.: 212340
• Electronic Relay Module (Ex i/Ex e): For switching Ex i and Ex e circuits with electrical separation. Part No.: 273000
• Separation Wall: For mounting between intrinsic safety and non-intrinsic safety connections. Part No.: 220101
• Error Message Suppression Resistors: For unused E/S channels. Part No.: 244911
• Warning Label: "Clean modules only with a damp cloth." Part No.: 162796
• DIN A4 Label Sheet: For E/S module labeling. Part No.: 162832