Macromatic ISD Series Catalog Page

60 MM INTRINSICALLY SAFE BARRIER RELAYS

ISD Series

The ISD Series of Intrinsically Safe Barrier Relays provide a safe and reliable
method to control up to four loads (motor starters, relays, etc.) with up to four input
devices (switches, sensors, etc.) located in a hazardous area.

intrinsically safe barrier relays | din rail

ISDUM4

 Approved for use in these

Hazardous Locations:

Class I, Div 1 (Zones 0 and 1
Canada), Groups A, B, C, D

Class II, Div 1 (Zones 20 and 21
Canada), Group E, F, G

Class III, Div 1

 4-Channel

 Terminals support 2-wire inputs

 Isolated 5A relay outputs

 Pluggable terminals offer easy

installation & replacement



Universal input voltage of 102­132V AC & 10-125V DC



Compact 60mm wide enclosure for
both DIN-rail or panel-mount



Standard & inverse logic

 Instantaneous & delayed response

times

 LED status indicator

ISDUR4

The ISD Series relays utilize a compact 60mm wide enclosure that can be both
mounted on 35mm DIN rail or panel-mounted with two screws. Terminals for the
input devices from the hazardous area are on the bottom of the unit for easy access
in the enclosure to incoming eld wiring from the hazardous area. Pluggable terminal
blocks on both the input and output sides allow for easy initial wiring of the unit as
well as replacement without having to remove any wires.

Each input has two terminals supporting direct connection of 2-wire input devices
eliminating the need to mount a separate terminal block. Each output relay is isolated
with two wiring terminals providing a true normally-open contact. This allows the output
contacts to be used in complex control circuits and allows for each output to switch
different voltages with respect to other outputs and the input voltage. A universal input
voltage of 102-132V AC & 10-125V DC covers a variety of applications with one
device.

Operation

Each ISD Series product consists of 4 intrinsically safe inputs and four
corresponding normally-open relay outputs. With input voltage applied, the V LED
will be ON (GREEN) to indicate power is applied. When the input device is closed,
the input LED is ON (GREEN). When the output relay is closed, the output LED is
ON (ORANGE). The ISD series offers four user-selectable congurations built in.

ISDUR4 has a two-position DIP-switch that selects a single conguration for all
channels.

ISDUM4 has an eight-position DIP-switch that selects a conguration for each
channel, independently.

Congurations

Standard Logic (DIP Switch set to “STD”):

When the input device is closed, the corresponding output contact is closed. When
the input device is open, the corresponding output contact is open.

Inverse Logic (DIP Switch set to “INV”):

When the input device is open, the corresponding output contact is closed. When
the input device is closed, the corresponding output contact is open.

No Time Delay (DIP Switch set to “0 S”):

The output contact changes state immediately in response to a change in input
device state.

UL913 8th Edition

2 Second Delay (DIP Switch set to “2 S”):

The output contact will delay 2 seconds before changing state in response to a
change in input device state.

INPUT

VOLTAGE

102-132V

AC

(50/60Hz)

and

10-125V

DC

NUMBER

OF

CHANNELS

4

CONFIGURATION

SELECTED FOR

ALL CHANNELS

SELECTED FOR
EACH CHANNEL

CATALOG

NUMBER

ISDUR4

ISDUM4

WIRING

DIAGRAM 814

4

60 MM INTRINSICALLY SAFE BARRIER RELAYS

Application data

ISD Series

Input Voltage: 102-132V AC (50/60Hz.) & 10-125V DC

Load (Burden): 5VA Maximum

Input Switch Open Circuit Voltage: 10V DC

Output Contacts:

SPST-NO (Form A) 3A Resistive @ 125V AC @60°C &
30V DC Resistive, Pilot Duty Rating D300

SPST-NO (Form A) 5A Resistive @ 125V AC @40°C &
30V DC Resistive, Pilot Duty Rating D300

Life:

Electrical: 50,000 Closures @ Full Load AC
Mechanical: 5 Million Closures @ No Load

Response Times:

Standard (DIP Switch set to “0S”): < 50ms
Delay (DIP Switch set to “2S”): Fixed 2 Seconds

Temperature:

Operating: -28° to + 60° C (-18° F to +140° F)
Storage: -55° to +85° C (-67° to 185° F)

LED Indication:

V: ON (Green); Inputs: ON (Green); Outputs: ON (Orange)

Insulation Voltage:

1500 V AC between coil & contacts
750 V AC between open contacts
1500 V AC between contacts of different output channels
1500 V AC between hazardous and safe circuits

Wire Sizes:

One #14-24 AWG Conductor or
Two #16 or 18 AWG Conductors

Mounting:

Mounts on 35mm DIN-rail or panel-mounted with two #8 screws
when DIN-rail clips are fully extended from under the enclosure.

Control Drawing:

See Instruction Sheet 901-0000-328, which includes Control
Drawing ISD1A04.

Approvals:

E318075

intrinsically safe barrier relays | din rail

Accessories

Terminal Kit Part # 70700: Replacement kit for Intrinsically Safe
Barrier Relay plugable terminals, includes 1 black and 1 blue
block.

Input Voltage: 102-132V AC and 10-125V DC

Output: 5A

Dimensions

2.60
(66)

4.36

(111)

2.36
(60)

4.36

(111)

Kit Part # 70700

2.36
(66)

Ø 0.167 [#8]

(4.2)

4.02

(102)

All Dimensions in Inches (Millimeters)

Ø 0.167 [#8]

(4.2)

Panel Mount Template

5