question about motor voltages

hi everyone, i have some motors from epson printers, acroding to the manual they are rated for 42, 36, 35 and 24 volts, can i use them with ramps and pololu drivers A4988 or DRV8825? is it safe?

this are the motors:

stylus 1200        em-288   em-295  (42v)
stylus color 880   em-318           (42v)
fx-1050            em-50    em-93   (36v)
C43UX              em-462           (36v)
FX-2170            em-243           (35v)
lx-300             em-211   em-210  (35v)
2 * lx-810         em-91    em-101  (24v)

first column is the printer, all epson, ie em-50 and em-93 from epson fx-1050, both 36 volts
in all cases i put first pf motor and then cr motor, except em-318, thats the asf/pump motor

all epson manuals i got: [www.dropbox.com]

thanks in advance

Edited 1 time(s). Last edit at 03/28/2016 11:35AM by alastors@gmail.com.

example motor data:

EM-93
Carriage Motor Specifications
Type                              4-phase 200-pole stepper motor
Voltage                          Driving: +36DC
                                     Holding: +5V DC
Coil Resistance              110 +/- 7% at 25°C per phase
Current                         Driving: 0.68A (max.)
                                     Hoding: O. 15A (typical)
Excitation                      1-2 phase, 2-2 phase

EM-50
Paper Feed Motor Specifications
Type                              4-phase 48-pole PM type stepper motor
Voltage                          Driving: + 36 VDC
                                     Holding: +5 VDC
Coil Resistance              780 +/- 3% at 25” per phase
Current                         Driving: 1.2 A (max.)
                                     Holding: 0.08 A(typical)
Excitation                     2-2 phase

Edited 2 time(s). Last edit at 03/28/2016 11:19AM by alastors@gmail.com.

more motor info:

EM-101
Carriage Motor Specifications
Type                              4-phase 48-pole stepper motor
Voltage                           Driving: + 24 VDC +/-10%
Coil Resistance              11 ohms +/-7% at 25 degrees C 
Current                           Driving: 0.36 A +/-10%(Typical) (Super Draft or Draft Printing) 
                                     0.28 A +/-10%(Typical) (NLQ Printing)  
                                     Holding: 0.09 A  +/-10% 
Excitation                       2-2 phase

EM-91
Paper Feed Motor Specifications
Type                              4-phase 48-pole type stepper motor
Voltage                          Driving: + 24 VDC +/-10%
Coil Resistance              40  ohms+/- 7% at 25 C
Current                          Driving: 0.30 A (Typ., 480pps, 24VDC) 
                                     Maximum, 1.1 A (Rush Current, 26.4 VDC) 
                                     Holding: 0.06 A +/-20 mA
Excitation                      2-2 phase
Driving Frequency 480 PPS

Edited 1 time(s). Last edit at 03/28/2016 11:19AM by alastors@gmail.com.

It's safe, but they won't work very well unless you use at least 24V power. Almost all RAMPS boards are only rated at 12V.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Thank you very much for your answer, i guess i need to find a ramps for 36 volts and use only motors rayed for that voltage, is there any resource on higher voltage ramps i can look into? For learning how to do it

Edited 1 time(s). Last edit at 03/28/2016 02:53PM by alastors@gmail.com.

RAMPS is a budget board. Even if you find a version rated at 30V or more, you will need to provide a 5V supply for the Arduino. I suggest you either buy a better control board rated at a higher voltage, or buy more suitable stepper motors to make your printer.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

if i altered the ramps so it woud not have the pins to power the drivers (vmot and gnd) and i use a separate power supply for those, would it work?

nevermid, someone else did the same question here and was answered, [forums.reprap.org], this is the best alternative i believe