Products

Satchwell Control Panel

Hurtwood manufacture a range of retrofit controls products for older and obsolete BMS's. We have developed our flagship Satrofit IO product to provide an easy and low cost swap-out route for Satchwell BAS and Sigma systems while our Staefa Retrofit (Staeffit) product does the same for the old Staefa AS1000 RSM system by replacing the main NRUA/A to NRUD/A controller cards.

Our Satrotool software makes Satrofit and Staeffit very straight forward to service.

Aside from the retrofit applications, our IO is also a very powerful and compact product suitable for new BMS installations. Our PC-based Satrofit commissioning tool is also available that uses a direct connection via a local port on the card. This allows the IO cards and the field sensors and outputs such as actuators and variable speed drives to be commissioned by a non BMS engineer before integration into the master BMS controller, reducing installation costs and time.

Our products communicate using the Modbus protocol, a robust, proven and open automation standard, to a wide range of compact and intelligent master controllers. These include:

  • Siemens Desigo PX
  • Open System Solutions (OSS) NeOSS V3
  • Trend IQ3 XNC
  • NorthBT Commander
  • Niagara based products such as the Tridium JACE & Centraline Hawk
  • The latest Schneider BMS products
  • Cylon and Delta

Satrofit I/O Cards

Satrofit AUNC 16UI & 16UO IO cards plug directly into the BAS and Sigma UNC 696 or 796 racks and read all the pre-existing Satchwell sensors. The output cards can drive the Satchwell 8 latching relay cards.

Take a look at our video (click below) to see how easy it is to update your old system with the new Satrofit cards:

Kevin Williams

The Features

  • The input cards have selectable digital, current and voltage inputs with status LEDs
  • Thermistors can be measured in two ranges - giving a high level of accuracy from 300 Ohms to 100K Ohms.
  • The input cards have 10 bit A/D converters and are individually calibrated to 0.25% accuracy
  • The flexible analogue outputs have up to 30mA of current and 4 off 0-20mA current regulated outputs
  • The cards can be directly connected to with the laptop based Satrofit tool allowing the sensors and actuators to be set-up and serviced by technicians who don't have access to the master controller, for example, during pre-commissioning

Satrofit Terminal Controller

The Satrofit SRC-AUNC-6-6-3 controller is a direct physical replacement for the popular Satchwell IAC 420 controller. The controller has a number of pre-set control strategies for building services such as small boiler houses and fan-coil units. The selection of and set-up of these programs can be carried out through the Satrofit tool. Additional control programs for bespoke applications can be provided on request by Hurtwood.

Features

  • The controllers have selectable digital, current and voltage inputs.
  • Thermistors can be measured in two ranges - giving a high level of accuracy from 300 Ohms to 100K Ohms.
  • The inputs have 10 bit A/D converters and are individually calibrated to 0.25% accuracy.
  • The three 0-10V analogue outputs have up to 30mA of current and there are 6 24VAC TRIAC outputs.
  • The controllers can be interfaced via an infra-red link to the Satrofit Tool software running on a laptop. This allows the control strategy and connected sensors and actuators to be set-up and serviced by technicians that don't have access to the master controller, for example, during pre-commissioning.

Staefa AS1000

Hurtwood manufacture a range of retrofit controls products for older and obsolete BMS's. We have developed our flagship Staefa Retrofit product to provide an easy and low cost swap-out route for the old Staefa AS1000 RSM system by replacing the main NRUA/A to NRUD/A controller cards.

This system is flexible and is easy to service and commission.

The Staefa Retrofit 48IO cards plug directly into the housing for the original NRUA/A to NRUD/A Integral RSM series of controllers and have connectors for the ribbon cables of the original NTIM and NTOM modules. They can read all the pre-existing Staefa sensors.

Staefa Retrofit

Staefa Retrofit cards are a powerful and cost effective input/output card and a wide variety of ribbon cable connected input and output modules are available. Variations to suit particular customers' requirements and to meet any retrofit application can be built on demand. Just get in touch.

Hurtwood also manufacture replacement modules for the NTIM and NTOM racks allowing the Staefa system to be maintained and added to for many decades to come

Features

  • The ribbon cable system allows the use of a wide variety of flexible IO modules offering different levels of electrical protection to suit installer's requirements.
  • The voltage inputs have 10 bit A/D converters and are individually calibrated to 0.25% accuracy.
  • The flexible analogue outputs have up to 20mA of current allowing them to drive fixed resistance transducers.
  • The cards can be directly connected to a laptop running the Satrofit Tool software. This allows the connected sensors and actuators to be set-up and serviced by technicians who don't have access to the master controller, for example, during pre-commissioning.

Retrofit - the Class 57 Analogy

The photo would appear to be of a modern railway locomotive, regularly used to haul express passenger train, actually the Cornish Riviera sleeper train to Penzance from London's Paddington station.

The locomotive in question through was actually built in the early 1960s, one of the ubiquitous Class 47s, and would have been hauling express trains on Britain's railways while steam locomotives where still a common sight.

What has allowed this iconic locomotive to stay in front line revenue earning service for many years yet? Put simply, a retrofit solution.

The original Sulzer diesel, a large 16 cylinder medium speed 4 stroke diesel, very much of 1960s technology, was removed and replaced with a modern North American built 2 stroke V12 engine coupled to a robust and reliable alternator rather than the original DC generator and the auxiliary systems renewed.

The result, a modern, efficient and powerful locomotive capable of a wide variety of duties for a third of the cost of a new locomotive.

Retrofit IO systems share the same philosophy, pre-existing and robust panel systems and their field wiring are analogous to the body shell and running gear of the original Class 47, which with care, has an almost indefinite life, and can be quickly and easily up graded to a modern and powerful BMS using a retrofit solution, speeding the process and reducing the cost in line with what an organisation can afford.

So just as rail operators have been able to improve performance and reliability and reduce their operating costs, building operators can equip themselves with a modern and reliable BMS for substantially less than they would have been expecting to pay via the old fashioned route of a complete strip-out and starting again.

Our Satrofit product is retailed directly through Tyrrell Systems. For details, contact us or see the dedicated Satrofit website.

For our Staeffit products, contact us directly.

Contact Hurtwood

About Hurtwood

Hurtwood are one of the foremost experts on building management system strategy, helping clients to navigate through the complexities of refurbishing often obsolete BMS.

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Contact

 +44 (0)1249 248 117
 kevin@hurtwood.org.uk