Emerson Process Management Bristol Series 9110 - Manual (Page 39)

CI-9110 4-7 Field Wiring
Figure 4-7 - DC Supply Connections
4.8 OPERATING NOTES
The startup procedures described herein are general for most applications. It is assumed
that the user is familiar with all the external process devices such as shutoff valves,
pressure limiters, circuit breakers, fuses, electrical supply, etc. and operates these devices
in a manner that produces a safe startup. It is also assumed that the unit is properly wired
and grounded as described in this section.
4.9 INITIAL CHECKS
Prior to starting the Regulator, its supply pressure and dc power source should be turned
OFF. Also, the process associated with the Regulator should also be turned OFF or placed
under some form of guarded control. A process that is not guarded may run out of control
and cause property damage and injury to persons. Once these conditions have been met,
proceed as follows:
1. The Regulator will be furnished as a 12 or 24 V dc type. Make sure that the supply
voltage is correct for the Regulator.
2. Remote Set Regulators will be furnished with a 3-15, 3-27 or 6-30 psig output range.
Check input pressure to the Regulator. It should be set to at least 3 psig above the
upper range value, and not more than 100 psig. Pressures greater than 100 psig will
require an external pressure limiter or regulator to maintain a safe input pressure.
3. To start the Remote Set Regulator, apply supply pressure and turn ON the dc power.
4. When power is applied, the stepper motor will operate immediately and set the output
to a value that corresponds to the level of the Command input signal.