| Suburban multiple unit | |
|---|---|
 SMU 266 departingCorinda station | |
.jpg) Interior of an SMU 260 | |
| Manufacturer |
|
| Built at | Maryborough |
| Replaced | SX carriages |
| Constructed |
|
| Number built |
|
| Formation | 3-car sets |
| Fleet numbers |
|
| Capacity |
|
| Operators | Queensland Rail |
| Specifications | |
| Train length | 72.42 m (237 ft 7 in) (260)[1] |
| Car length |
|
| Maximum speed |
|
| Weight |
|
| Traction system | |
| Traction motors | 8 × 180 kW (240 hp) 3-phase AC induction motor |
| Power output | 1.44 MW (1,930 hp) |
| Electric system(s) | 25 kV 50 Hz AC (nominal) fromoverhead catenary |
| Current collection | Pantograph |
| UIC classification |
|
| Braking system(s) | BlendedRegenerative electric andelectro-pneumatic |
| Multiple working |
|
| Track gauge | 1,067 mm (3 ft 6 in) |
TheSuburban multiple units (SMU) are a class ofelectric multiple units manufactured byWalkers Limited/Downer EDI Rail,Maryborough forQueensland Rail'sCitytrain division between 1994 and 2011. The SMU is divided into in three subclasses, units 201-212 as the200 series, units 221-250 as the220 series, and units 261-296, as the260 series.
The Suburban Multiple Units consist of three cars. The first car is a Driver Motor fitted with motors for all variants (numbered 5), the middle car is either a motor car (numbered 6 for SMU 200 series) or trailer car (numbered 7 for SMU 220/260) with pantograph fitted, and the third car is either a Driver Trailer (SMU 200 series) or the second Driver Motor B also fitted with motors for the SMU 220 and 260 series (numbered 8).[3] Like most trains in the Citytrain fleet, two three-car IMUs can be coupled to form one six-car unit.[citation needed]
The SMU200 series were introduced in 1994 due to a rollingstock shortage after an increase in demand. They were the first new trains since the EMU deliveries ended in 1989. Twelve were built byWalkers Limited,Maryborough with electrical equipment supplied byABB. The trains are numbered SMU201-SMU212. The first entered service on 16 August 1994.[citation needed]
 | This sectiondoes notcite anysources. Please helpimprove this section byadding citations to reliable sources. Unsourced material may be challenged andremoved.(October 2023) (Learn how and when to remove this message) |
The SMU220 series were introduced into service in August 1999 to cater for service increases on recently upgraded lines such as theCaboolture line triplication fromNorthgate toLawnton. The SMU220s replaced the last remaining loco-hauledSX carriages suburban services inBrisbane. The trains are numbered SMU221-SMU250. All have motor driving cabs at both ends each coupled to the trailer power car in the middle (DMA-T-DMB) as opposed to the DM-M-DT configuration. These cars were manufactured by Walkers Limited in partnership withADtranz. These units use more energy efficientIGBT traction packages, as opposed to the thyristors for the 200 series. The train’s body design is similar to its predecessor, albeit with a single air conditioning module in the middle of each carriage. Selected units previously had a software update installed to enable them to operate slightly higher speeds suitable for theGold Coast line and would have the markings 'HS' on the right, but this practice was discontinued due to wheel wear issues, and the braking system not being adequately equipped.
Older SMUs have undergone progressive re-configuration to seating, lighting and hand-rail arrangements to allow easier access to the elderly, parents with prams and people with disabilities, which includes people in wheelchairs.[4] Older SMUs have been refurbished to comply with theAustralian Disability Discrimination Act 1992[5] with the 220 series having the carpet interiors replaced with hard-wearingLinoleum flooring for low maintenance cleaning, with a blue section for seating compartments separated by red tactile bumps that are situated in doorways.Dot-matrix displays have been added alongside new automated voice announcement systems on older SMUs (the SMU260s were delivered with them already installed). These systems are used to address passengers with information such as the current and next station as well as alerting passengers where to transfer for other services.
Along with the rectification of theNGR, the government has announced that the SMU200 & 220 series will be overhauled at Maryborough extending their services into the future.[6] The SMU200 units have been completed with new flooring and seat fabric among many cosmetic and mechanical improvements performed on the units. These units are recognisable by having the door frames on the cab doors painted black (with the exception of SMU 205).
.jpg)
In 2004, eight SMU260 class units were ordered fromDowner EDI Rail, Maryborough to cater for increased demand. They are of a similar design to theTransperth B-series train. The first two units entered service in August 2008. These were followed by an additional 14 units. In March 2009, an additional 20 units were ordered.[7][8] These units are identical in design to theIMU 160 series trains with the exception of toilets and luggage racks, and the 260s and 160s are also interoperable with each other. It also has similar operating speed of 130 km/h (81 mph) to the IMU 160, making it ideal for running on interurban lines.[citation needed]
Since July 2023, the SMU260s have been undergoing a major refurbishment. Two units, SMU262 and SMU266, have already been completed under this scheme with new vinyl flooring, better Wi-Fi, digital advertising screens and the driver B carriage having mostly sideways seating.[9]
.jpg)
SMU+IMU
Media related toQR SMU 200 series at Wikimedia Commons Media related toQR SMU 220 series at Wikimedia Commons Media related toQR SMU 260 series at Wikimedia Commons