The YS1700 is a drop-in SLC replacement for the Siemens 353 and is the ideal choice for many control applications offering extreme reliability and sophisticated control.

1. An Effective Replacement for the Siemens 353
Siemens has recently discontinued their popular 353 SLC controller.
This unit and its predecessors have been used in many process
applications for years, and the discontinuation of this product has left
many companies uncertain of their path forward for supporting their
processes. Now that the entire Moore/Siemens 353 family is obsolete,
are you considering upgrading to a DCS? Have you reviewed the
limited number of 3x6 SLC vendors in the marketplace? Will you turn
to eBay looking for spare parts? We have a better solution for you;
Yokogawa and its YS1700 PID loop controller. The YS1700 is a drop-in
SLC replacement for the Siemens 353 and will keep you off of eBay
looking for spare 353 parts.
The Yokogawa YS1000 Series is the ideal choice for many control applications
offering extreme reliability and sophisticated control. This product family has
bright, easy-to-read displays, multiple I/O points, and powerful loop tuning.
For critical applications, the YS1700 employs dual CPUs for maximum
reliability and hard-manual control for added protection. The YS1700’s
powerful function block programming allows for custom strategies to control
many demanding processes such as boilers and steam generators, PH control,
dosing control, and many other demanding plant processes.
Reasons to select the YS1700:
Nuclear qualified with industry acceptance and installations
The YS series has been tested to meet the most stringent demands
of the nuclear industry and has industry acceptance. Servicing the
nuclear industry requires a commitment in quality and longevity.
ABS Type approved for marine and offshore
applications
Yokogawa has the only ABS Type approved 3X6
controller on the market for marine and offshore
applications. Selecting an ABS approved unit allows
the customer to install the YS without the cost of
additional testing and special inspection required by
the shipping bureau.
ABS Type Certificate 16-YO1503743-PDA-DUP
Miller Energy, Inc. | 908-755-6700 | www.millerenergy.com

2. Extensive experience in boiler applications
Automated control of industrial boilers is an
excellent application for YS1700 controllers. These
instruments can be programmed to perform the
operations of plant master, boiler master, fuel and
air control with oxygen trim, and drum level /
feedwater control. The YS1700 is a reliable and cost
effective means of upgrading boiler controls and
increasing boiler efficiency while lowering operating
costs by implementing advanced control strategies.
A proven upgrade path to protect your engineering investments in installation and
application development
Yokogawa’s YS1000 is backwards compatible to all of its legacy 3x6 controllers developed
since 1965.
The YS has been designed to reuse the expense of hardware installation and engineered
application development. These items are not required to be reengineered when upgrading to
a future product family. Upgrading a legacy Yokogawa controller with a new, modern unit can
be done in 25 minutes.
The housing and wiring stays in place and only the control unit is replaced. Application
software can be automatically converted and installed in the latest models.
Designed for 100% up-time
Features like dual CPUs, the hard manual back-up, hot
swappable LCD, and the portable back-up station
ensures that a controller mishap, standard
maintenance, or product upgrade will not prevent a
control signal from reaching the final control element.
A very high mean time between failure calculation
minimizes unexpected failures, and the nonvolatile
memory means no batteries to fail and no surprising
program loss.
AT
K
T A
∫
A
K +
Oxygen
FT
√
Fuel Flow
Low
Select
K
T A
∫
Fuel
Valve
f(x)
>
FT
√
f(x)
Air Flow
X
K
T A
∫
f(x)
<
Firing Rate
Demand
High
Select
A
25%
Air
Damper
Firing Rate
Demand
f(x)
Operator
Bias
From Boilermaster
Miller Energy, Inc. | 908-755-6700 | www.millerenergy.com

3. Other powerful features
• Excellent legibility thanks to a modern high definition color display.
• Preconfigured control modes for basic applications requires no programming
• Powerful function block programming for custom applications with large programming
capacity
• Reliable Ethernet / Modbus / peer-to-peer communications
• Resistant to malicious network data storm attacks based on GE’s Achilles Certification
level 1
• Expandable I/O
• AC/DC dual power supply with wide operating voltage range to ensure stability against
supply voltage fluctuations
• Internationally recognized agency approvals: FM nonincendive, CSA nonincendive, ABS
American Bureau of Shipping, and CE Mark
The Yokogawa YS1000 Series is the ideal choice for many control applications offering
extreme reliability and sophisticated control. Want to know more? Find more details
at MillerEnergy.com or contact a product expert today by calling 908-755-6700.
Miller Energy, Inc. | 908-755-6700 | www.millerenergy.com