Device Control; Table 30 Device Control Display Details - Honeywell 900 User Manual

Process Displays

Device Control

Device Control

The Device Control function block is normally used to control pumps. Based on certain events the device
will be placed into the appropriate state.
Item
State
Seconds
Run Request
Active
Failed
Reset
98

Table 30 Device control display details

READY, PRESTART, STARTING, RUNNING, STOPPING, DISABLED, or
FAILED. READY (off state) is the initial state of the block. See Table 31
Device states.
Current Timer value. READ ONLY – Counts down to zero.
•
The Start Delay Timer is active in the Prestart state
•
The Stop Delay Timer is active in the Stopping state
•
The Feedback timer is active in the Starting state while the Feedback
input pin is OFF.
•
The Feedback timer is active in the Running state (if the Feedback
input turned on in the starting state.)
Green when device is requested to be put in the Starting or Running state.
Green when state is Running or Stopping.
Red when the control is in the Failed state (the controlled device reported
a failure or did not start up in time; device is being monitored for a manual
or automatic reset).
Select to reset the control when it is in the FAILED state to return it to the
READY state.
900 Control Station User Guide
Description
Revision 9
May 2014