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REV.-A
2.4.1.4 Top Edge Holder Mechanism Operation
The top edge holder (TE holder) is driven by the power of the top edge holder motor (TE motor). The
TE motor is a 4-phase stepping motor capable of bi-directional rotation, rotation in arbitrary amounts,
and stopping. Motor power is transferred to the TE holder arm by the TE reduction gear. Accordingly,
the TE holder plate moves forward and backward.
TE holder motor specifications are listed below.
Type
Drive voltage
Coil resistance
Drive method
Consumption current
Drive frequency
Feed pitch
4-phase, 8-pole PM type pulse motor
24VDC ± 10%
42±2.1 ohms/phase (25°C)
2-2 phase excitation, constant-voltage control
Maximum time: 0.66 A/phase (26.4V, 39.9 ohms)
Drive time: ave. 0.32 A/phase
Hold time: 100mA/phase
360 pps (4 IPS)
4/360" (approx. 0.279)/1 step
Frame M
TE holder arm
TE Reduction Gear
Top edge holder plate
r - - - - - - - - - - - -
,
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Figure 2-33. TE Holder Mechanism
2-33
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