[Elevator Servo Operation] - Riso RN SERIES Technical Manual

CHAPTER 14. TIMING CHARTS
ELEVATOR OPERATIONS

[Elevator Servo Operation]

Upper limit ON
sensor
OFF
Lower limit
ON
sensor
OFF
Elevator motor
ON
overload current
OFF
Paper detection ON
sensor
OFF
Paper feed tray ON
safety switch
OFF
Elevator motor Raise
OFF
Lower
When ON: Upper limit sensor: Blocked, Lower limit sensor: Blocked, Paper detection sensor: Open,
Paper feed tray safety switch: Depressed
(1) The operation ends if the upper limit sensor is ON from the start.
If the upper limit sensor is OFF, the elevator operates until the upper limit sensor goes ON.
(2) The elevator motor overload current is continually monitored at 100 ms intervals while the elevator is
operating, and error message [T02-401] is displayed if an overload current is detected three times in
succession.
(3) The paper detection sensor is continually monitored at 100 ms intervals while the elevator is
operating, and error message [C04-402] is displayed if no paper is detected twice in succession.
(4) The paper feed tray safety switch is continually monitored at 100 ms intervals while the elevator is
operating, and error message [A06-403] is displayed if it is detected as OFF twice in succession.
(5) If the upper limit sensor goes ON, the elevator briefly descends until the upper limit sensor goes
OFF.
(6) The elevator then rises until the upper limit sensor goes ON again.
(7) The elevator servo operation is subsequently performed.
(8) If the upper limit sensor remains OFF for more than 2 s during the elevator servo operation, error
message [T02-408] is displayed.
(1)
100 ms 100 ms 100 ms
(5)
100
ms
At start of printing
RN (Version 1.0)
(8) OFF more than 2 s in
(2) ON three times in succession (Error: 401)
(3) ON twice in succession (Error: 402)
(4) ON twice in succession (Error: 403)
(6)
100
ms
14 – 12
succession (Error: 408)
Controlled by H/W
Elevator servo