Flowserve I90 Series Intrinsically Safe Modular Accessory System - Manual (Page 2)

I. INTRODUCTION
The Intrinsically Safe Modular Accesory System Series I90 (or I90
M.A.S.) is designed to provide a wide choice of valve position
feedback and pneumatic valve actuator control functions. Applications
range from simple end-of-travel limit switch indication to automated
control using feedback from a system parameter sensor (temperature,
flow rate, etc.). Maximum ambient temperature for models with
solenoid is 110°F.
The concept behind the unit is flexibility, allowing the user to customize
an I90 M.A.S. for a particular application. For this reason, these
instructions have been arranged as a series of individual chapters, each
dealing with separate options available in the I90 M.A.S. Regardless,
this unit is a complex device and not all options can be accommodated
simultaneously. A table summarizing the available options follows. Note
that POSITIONER or CONTROLLER options are not available. Certain
options also require the addition of a second terminal block which will
be provided in the M.A.S. unit or kit when required.
a WARNING: The Series I90 M.A.S. is an electromechanical device
subject to normal wear and tear. Its life is dependent upon
application and environmental conditions. Breather/drain fittings are
recommended for humid environments when moisture may condense
inside the sealed M.A.S. housing.
CAUTION: Flowserve recommends that all product which must be
stored prior to installation be stored indoors, in an environment
suitable for human occupancy. Do not store product in areas where
exposure to: relative humidity above 85%, acid or alkali fumes,
radiation above normal background, ultraviolet light, or temperature
above 120°F or below 40°F may occur. Do not store within 50 feet of
any source of ozone.
The following options will be intrinsically safe when connected
through Zener barriers rated at 28 volts DC maximum, 300 ohms
minimum and 28 volt DC diode as shown in the wiring diagrams below.
IMPORTANT: Shielded cable must be used for each intrinsically safe
circuit, and the shield must be connected to a Zener barrier ground.
Flow Control Division
Worcester Controls
2 Intrinsically Safe Modular Accessory System (Series I90) WCAIM2033
AVAILABLE OPTIONS (Non-Positioner/Controller Units):
Order Codes and Descriptions
B – Breather/Drain Fitting
P – Single Feedback Potentiometer
S – Single-Acting Solenoid Block
D – Double-Acting Solenoid Block
M2 – 2 SPDT Mechanical Switches
PRODUCT CODE EXAMPLES:
20 P I90 S M2
10 I90 D T3293
M.A.S. MODEL: The M.A.S. product code is marked on the nameplate as the M.A.S. model number, with the exception of the voltage rating
(if any) and product revision level (R#). Voltage rating and R# are marked in separate locations on the nameplate.
THE PRODUCT CODE IS COMPOSED OF:
Size _________________________________________ Size of actuator (10, 15, 20, etc.) to which the
M.A.S. will be mounted. Will be blank if unknown.
Product Options________________________________ See Below.
Product Series ________________________________ I90
Action _______________________________________ Blank – If no Solenoid
S – Single-Acting Solenoid
D – Double-Acting Solenoid
Direction _____________________________________ Blank – Standard
Switch options ________________________________ See Below.
Circuit Board __________________________________ None – Will be Blank
Custom Product No. (if special) ___________________ P#, T#, C#, or Similar #