schneiderI/A Series® HARDWARE Product Specifications

ISCM DESIGN

ISCM modules support I/A Series and HART™ 

communications over the standard HDLC fieldbus. 

They have a compact design, with a rugged exterior 

for physical protection of the electronics in 

environments with a minimum ingress protection of 

IP 54. P+F-provided enclosures specially designed 

for mounting of the P+F intrinsically safe I/O modules 

provide the appropriate level of environmental 

protection (for Zone 2/Div 2 or Zone 1 applications).

The ISCM and the supported P+F I/O modules can 

be removed/replaced from the base or extension unit 

without removing power. Light-emitting diodes (LEDs) 

incorporated into the front of the ISCM and I/O 

modules indicate module status.

HIGH RELIABILITY

In redundant ISCM configurations, the redundancy of 

the module pair provides very high subsystem 

availability time.

Either ISCM may be hot-swapped without upsetting 

input or output communications to the other module, 

or removing power from either module.

IS/IO SYSTEM CONFIGURATION 

REQUIREMENTS

The requirements in Table 1 must be met to ensure 

proper system operation:

Table 1. IS/IO System Configuration Requirements

Table 1. IS/IO System Configuration Requirements (Continued)

(a) Be aware that Zone 1 and Zone 2 installations have other special requirements for power consumption and dissipation. These are 

observed automatically by P+F’s ATEX audited factories. Other panel builders would have to obtain their own certificates equivalent to 

P+F’s PTB07ATEX1075 for Zone 1 and PF08CERT1234 for Zone 2.

(b) Windows XP and Windows Server 2003 workstation operating systems only.

PSS 21H-2Y6 B4

Page 6

MODULAR UNIT MOUNTING

The ISCM mounts on supported P+F-supplied LBstyle or FB-style base or extension units, which 

accommodate different quantities of P+F I/O 

modules, depending on the application.

The ISCM base unit includes signal connectors for 

the ISCM and P+F I/O modules, redundant 

independent power connections, and 2 Mbps HDLC 

module Fieldbus connections for communications to 

the I/A Series FCP270 or ZCP270

Redundant ISCMs must be located in the left-most 

two slots in the LB-style base units. One each of the 

FB-style ISCMs are located in the main and 

redundancy units.

Table 2 lists the available ISCM modules and 

available support equipment.

Table 2. ISCM Modules and Support Equipment

Zone 2 (LB-Style) P+F Intrinsically Safe Units and Support Equipment To Support the ISCM Table 3 lists the supported Zone 2 (LB-Style) I/O base, redundancy and extension units and their associated enclosures and power supplies.

Table 3. P+F Intrinsically Safe Units and Support Equipment To Support the ISCM (Zone 2, LB-Style)

Zone 1 (FB-Style) P+F Intrinsically Safe Units and Support Equipment To Support the ISCM

Table 4 lists the supported Zone 1 (FB-Style) I/O base, redundancy and extension units and their associated 

enclosures and power supplies.

Table 4. P+F Intrinsically Safe Units and Support Equipment To Support the ISCM (Zone 1, FB-Style)

(a) Visit the IPS Portal (www.ips.invensys.pepperl-fuchs.com) to order this equipment as it does not have an Invensys part number.