
4. SERVO FUNCTION DETAILS B-65150E/04
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(6) TCMD signal
The TCMD signal conveys a torque command for the motor.
When a motor is running at high speed, its actual currents (IR and IS)
may differ from the rating because of back electromotive force.
The output voltage of the signal becomes 4.44 V at maximum current.
A higher signal voltage may be observed in a motor in which the actual
current limit function is enabled, however.
Table 4.19 (f) TCMD waveform conversion
Maximum
current
Ap/V Applicable servo motor
12 Ap 2.7
β0.5/3000, β1/3000, β2/3000,
α1/3000, α2/2000, α2/3000
20 Ap 4.5
β3/3000, β6/2000, αC3/2000, αC6/2000, αC12/2000,
αM2/3000, αM2.5/3000, α3/3000HV, α6/3000HV
40 Ap 9
α2.5/3000, α3/3000, α6/2000, α12/2000, α22/1500, αC22/1500,
αL3/3000, αM3/3000, αM6/3000HV, αM9/3000HV,
α12/3000HV, α22/3000HV (driven with 40 A), α30/3000HV (driven with 40 A)
1500A, 3000B
60 Ap 14
α22/3000HV, α30/3000HV,
αM22/3000HV, αM30/3000HV
80 Ap 18
α6/3000, α30/1200, α12/3000, α22/2000,
αL6/3000, αL9/3000, αM6/3000, αM9/3000, αM6/3000HV
6000B
130 Ap 29
α22/3000, α30/2000, α30/3000, α40/2000, α40/2000FAN,
αL25/3000, αL50/3000, αM22/3000, αM30/3000, αM40/3000,
9000B
240 Ap 55 α65/2000, 15000C
360 Ap 82 α100/2000, α150/2000, αM40/3000FAN
*α300/2000, α400/2000 (Winding tandem)
Effective current (RMS) = TCMD signal output (Ap) × 0.71
* For motors with a winding tandem, the current per amplifier is calculated as listed above, but their actual
torque is doubled.
(7) SPEED signal
The SPEED signal conveys the rotation speed of the motor.
Signal conversion 3750 rpm/5 V
Linear motor
Signal conversion 307.2 (m/min)/5 V
When the SPEED signal is latched at 5 V, check whether the following
parameter is set with a value.
1983 (Series 15-A)
1726 (Series 15)
8x90 Must be kept at 0.
2115 1115
NOTE) Setting this parameter with a value other than 0 disables the
SPEED signal output.