Theory Of Operation; Clamp Unit Home Positioning System - Riso GR 3770 Technical Manual

1. THEORY OF OPERATION

1. CLAMP UNIT HOME POSITIONING SYSTEM

When the clamp unit is held lowered in Power ON or All Reset state (when the clamp safety SW has not been
pushed), perform the following clamp unit home position returning to raise the clamp unit.
1. When both 0° ° ° ° ° and 180° ° ° ° ° angular sensors are held OFF:
The clamp motor is turned ON in "close" direction until the clamp plate is closed, the 0° angular sensor is turned
ON, the clamp unit is raised and Clamp Safety SW is pushed.
2. When 0° ° ° ° ° angular sensor is held ON:
The clamp motor is turned ON in "open" direction until the clamp plate is opened, the 180° angular sensor is
turned ON, the clamp unit is raised, and Clamp Safty Sw is pressed.
3. When 180° ° ° ° ° angular sensor is held ON:
The clamp motor is turned ON in "close" direction until the clamp board is closed, the 0° angular sensor is
turned ON, the clamp unit is raised, and Clamp Safety SW is pressed.
LED DRMO
DRM1
0°
180°
Drive gear II
Clamp cam
5 - 1
MASTER MAKING SECTION
THEORY OF OPERATION
Lit up when 0° angular sensor detects magnet.
Lit up when 180° angular sensor detects magnet.
Clamp safety SW
Clamp motor
GR3770