CM (Coded Manual) Mode

last SG · 2007-04-30T23:15:12+00:00

if the system is without ATP, it needs to run on RM (18km/h limit, motor stops at 16km/h). otherwise, CM or ATO will apply as long as ATP is active. when ATP...

VODKA KE0601 SG

Double Post, opps.

^tamago^ SG

Doesn't that mean if it rained the whole day, they have to press that dead man's switch for the whole time? Surprised

^tamago^ SG

think i encounter before. Laughing

this fact was also mentioned during the last last depot open house 10 yrs ago~

Manager433 SG

Laughing Arbo then?

VODKA KE0601 SG

If i'm the TO, would probably use something to hold-down the deadman-switch, there's no surveillance in the driver's cabin, right? I meant sometimes i see them reading "the newpaper" or playing with their personal belongings.

SMRT 32373238 SG

during that time its on auto lor... by the way what is "coast'? cruising?

SMRT 32373238 SG

I've seen a train overrun for almost half the train length... it still managed to reverse back leh...

also i heard that they have to seek permission from the station control?

SMRT 32373238 SG

i dont know abt EWL... but from experience in rainy days on NSL, the TO sometimes drives on maunal from bishan to braddell... then from braddell to marina bay is auto le... other times from bishan straight to marina bay is auto all the way...

can tell because i'm used to the auto-pilot pattern in the tunnels

jetabt767400 SG

Hmm, yeah, I saw many of them doing that too, haha, cos its like so sian in the cab during the journey, then also nothing to do...
If I can ever be TO, I would drive CM all the way from BNL to PSR, haha... Yeah, really cool to drive straight...

The_Bus_Guide SG

Cruising/Coasting is when no power is supplied to the traction motors and the train moves on its own momentum. There are flywheels attached to the the bogies which helps the train to maintain speed.

Oceane SG

Often in a train-car, I watch the power-meter.

The middle is 0, then spreads out 1-8 on both sides.

So P1 = The meter turns clockwise to 1, B1 = turns anti-clockwise to 1?

I know coast is @ 0.

Manager433 SG

Sa la. Laughing

^tamago^ SG

which train car u looked at? Surprised

^tamago^ SG

i think i will get wrist pain. Embarassed

VODKA KE0601 SG

Tat 1..., is the power it received from the third-rails or from the regenerative-braking system. Not a direct indication of the control stick's position. Correct me if i'm wrong.

VODKA KE0601 SG

The one by semens. Laughing

^tamago^ SG

i'd believe it's ammeter, a common yardstick for amount of power being supplied by the motors, but a "zero" at the middle suggests it's a voltmeter. Confused

VODKA KE0601 SG

Is not, the readings is in Kilo-Newtons. Used to measure acceleration and deceleration (or energy required/released). The higher the acceleration, the more energy is required. Likewise, the higher the deceleration the more electrical energy is "recycled" through the regenerative braking system.

Edit: Btw, ammeter's for current and voltmeter's for voltage. Power would be current x voltage. (IIRC the lesson taught in mine electronics-module). Smile

^tamago^ SG

no no, it's not physics i'm driving at. the meter left of the speedo is an ammeter in this photo.

VODKA KE0601 SG

Hmm, not sure 'bout that.

Anyway, according to the brochure by Siemens, each C651-train set have 16x 140KW motors served by the 750 volts third-rail. So judging by this, and Since, Power=Current x Voltage, we can conclude each motor requires a current of 186.66 Amperes. And the entire train-set, 2986.88 Amperes. Of course, this's just a basic-figure, with no other variations involved. Apologized, if i got carried away with all these physics. LoL, just a part of what i do in life.

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