Remote Input Connections - Honeywell 5704 Operating Instructions Manual

MAN0448_Issue 13_01-2010
005704-M-5001 A03249
CHAPTER 4 - INSTAllATION INSTRUCTIONS
14.

REMOTE INPUT CONNECTIONS

Connecting voltages in excess of 32V to the remote inputs may
cause permanent damage to the Four Channel Control Card.
There are two remote inputs, RESET and INHIBIT, which are individually
configurable for active high or active low operating modes. Each input
is common to all four channels of the Four Channel Control Card.
Check the configuration sheet supplied with the system to determine
the factory configured operating modes. The operating mode can be
reconfigured easily using a computer attached to the Engineering Port.
Contact Honeywell Analytics or your local agent for more information.
The switching level of the remote input pins (when enabled) is
approximately +2V with respect to the dc system 0V. The inputs require
less than 5mA drive current and irrespective of configuration are
internally pulled down to system 0V.
Active high remote inputs may be left unconnected or can be connected
to +24V via a normally open contact. The remote input will operate
whenever the contact closes.
Active low remote inputs may be connected to +24V via a normally
closed contact. The remote input will operate whenever the contact
opens. Do not leave active low inputs unconnected.
CAUTION
4-47
5704 Control System