Isolators at its best - ISpac

I. S. Isolators

• All standard functions with 2 channels per module
• Compact size, only 17.6 mm wide
• Detachable terminals available as screw, cage clamp and insulation cutting terminal
• Central wiring of power supply and common error message via pac-Bus
• All modules with line fault detection and signaling via relay contact

 pac-Bus Type 9194

• Supply for approx. 40 modules per segment
• Usable for high and low profile DIN rails (NS 35/15 and NS 35/7.5)
• Just snap on DIN rail without tools
• Potential free error messaging contact for common error signal
• Low cost supply via terminals
• Supply module with integrated replaceable fuses and redundant supply available

pac-Carrier Type 9195

• pac-Carrier for 8 or 16 modules, up to 32 signals
• All standard ISpac isolators can be used
• Customized system cables to automation systems
• Redundant power supply with message contact and exchangeable fuses
• Horizontal or vertical installation
• Fast and secure installation of the isolators without tools
• Comfortable exchange of the isolators with secured ejector mechanism

I.S. Isolators for Installation in Zone 1, 21 Type 8510

• Based on ISpac product family
• Enables the installation in Zone 1, 21 if mounted in EEx e enclosure (e.g. R. STAHL Series 8146, 8125)
• Explosion protection: E II 2 G EEx de [ia] IIC
• Following functions are available:
• Switching repeater
• Transmitter supply unit

2-, 3-wire transmitter

2-wire transmitter HART

4-wire transmitter, current source

4-wire transmitter HART

i/p converter, HART control valve

HART-Multiplexer

Resistance thermometer (RTD), Poteniometer

Thermocouple

Contact, optocoupler output

NAMUR proximity switch

Frequency input

Solenoid valve, LED indicator

Fire & gas detection

Intrinsically safe field bus
RS 485, RS 422

Intrinsically safe power feed of load

Trip Amplifier

The I.S. interface should be selected such that the safe maximum values of the I.S. interface (Uo, Io und Po) are less than, and the values Co and Lo are greater than the safe maximum values of the field device.
These values (Ui, Ii, Ci und Li) are to be derived from the test certificate of the field device. Otherwise, the national standards for the installation of intrinsically safe circuits should be applied.

Field device (selection)

Isolator

2-, 3-wire transmitter

Transmitter supply unit

9160, 9162

Control valve
i/p converter
analog / digital indicator

Isolating repeater (I.S. output)

9165, 9167

NAMUR proximity switch

Switching repeater

9170

Solenoid valves
Indicator light

Digital Output

9175, 9176

The safe maximum values of the field device (U

Field device (selection)

Isolator

2-, 3-wire transmitter, mA sources

Transmitter supply unit

9160, 9162

Simple electrical apparatus: An electrical component or a combination of components of simple design with precisely known electrical parameters that does not affect the intrinsic safety of the circuit in which it (they) is (are) to be installed.

Simple electrical apparatuses can be:

1. Passive components, for example, switches, junction boxes, resistors and simple semiconductor components;
2. Sources of stored energy with precisely known parameters, for example, capacitors or inductors, the values of which are taken into account, if the overall safety of the system is assessed;
3. Energy sources, for example thermocouples and photocells that generate no more than 1.5 V, 100 mA and 25 mW. Inductors or capacitors that are contained in these sources must be taken into account as in b).

Their interconnection with an I.S. interface is therefore likewise intrinsically safe (EN 60 079-14).

Otherwise, the national standards for the installation of intrinsically safe circuits should be applied.

Field device (selection)

Isolator

Thermocouples

Temperature transmitter

9182

Resistance thermometers, Potentiometers

Temperature transmitter

9182

Resistance isolator

9180

Frequency transmitter

9146

Contacts, optocoupler output

Switching repeater

9170