Spectrum Controls 1771sc-IMI16 - Manual (Page 8)

Specifications (Cat. No. 1771sc-IMI16)
Inputs per Module 16 (isolated)
Module Location 1771 I/O chassis
Nominal Input Voltage 220/240 VAC @ 50/60 Hz
250 VDC
Nominal Input Current
@ 220 VAC, 50 Hz
11.44 mA
@ 220 VAC, 60 Hz 14.08 mA
@ 250 VDC 2.16 mA
Input Signal Delay See page 1 of this publication.
On-state Current (minimum)
@ 159 VAC, 50 Hz
6.30 mA
@ 159 VAC, 60 Hz 8.00 mA
@ 184 VDC 1.30 mA
On-state Voltage (range) 159 to 264 VAC
184 to 276 VDC
Off-state Current (maximum)
@ 70 VAC
2.8 mA
@ 50 VDC 0.35 mA
Off-state Voltage (maximum) 70 VAC; 50 VDC
Input Impedance 250 ½ in series with a parallel combination of
0.15 µF and 112.4 k½
Power Dissipation 11.5 W max.; 0.10 W min. 1
Thermal Dissipation 39.2 BTU/hr max.; 0.34 BTU/hr min. 1
Backplane Current 100 mA max.
Isolation Voltage 1500 VAC channel-to-channel
1500 VAC channel-to-backplane
Environmental Conditions
Operational Temperature
0¡ to 60¡C (32¡ to 140¡F)
Storage Temperature -40¡ to +85¡C ( -40¡ to 185¡F)
Relative Humidity 5 to 95% (without condensation)
Certifications CE per Council Directives 89/336/EEC for EMC
and 73/23/EEC for Low Voltage
Conductors Wire Size 14 gage stranded, maximum
3/64 inch insulation, maximum
Category 1 2
Keying Between 2 and 4
Between 12 and 14
Field Wiring Arm A-B Catalog #1771-WN
Wiring Arm Screw Torque 7 to 9 inch-pounds
1 Max. with all 16 inputs turned on (100% duty cycle); Min. with no inputs turned on.
2 Use this conductor-category information for planning conductor routing as described
in the system-level installation manual.
The Encompass logo is a trademark of Allen-Bradley Company, Inc. © 1998 Spectrum Controls,
Inc. All rights reserved. Specifications subject to change without notice. Printed in U.S.A.
Publication 0300125-02 Rev. B August 1998
Installation Data
AC/DC (220/240 V) Input Module
Cat. No. 1771sc-IMI16
U.S.A. Headquarters
Spectrum Controls, Inc., P.O. Box 5533
Bellevue, Washington 98006
Fax: (425) 641-9473 ¥ Tel: (425) 746-9481