Sequence Of Operation; Ezlogic System - HYTROL 199-CREZD Manual De Instalación Y Mantenimiento

personnel, an emergency stop device is not required.
The emergency stop device shall act directly on the control of the conveyor
concerned and shall not depend on the stopping of any other equipment. The
emergency stop devices shall be installed so that they cannot be overridden from
other locations.
d) Inactive and unused actuators, controllers, and wiring should be removed from
control stations and panel boards, together with obsolete diagrams, indicators,
control labels, and other material which serve to confuse the operator.
SAFETY dEVICES
A) All safety devices, including wiring of electrical safety devices, shall be
arranged to operate in a "Fail-Safe" manner, that is, if power failure or failure of the
device itself would occur, a hazardous condition must not result.
B) Emergency Stops and Restarts. Conveyor controls shall be so arranged
that, in case of emergency stop, manual reset or start at the location where the
emergency stop was initiated, shall be required of the conveyor(s) and associated
equipment to resume operation.
C) Before restarting a conveyor which has been stopped because of an
emergency, an inspection of the conveyor shall be made and the cause of the
stoppage determined. The starting device shall be locked out before any attempt
is made to remove the cause of stoppage, unless operation is necessary to
determine the cause or to safely remove the stoppage.
Refer to ANSI z244.1-1982, American National Standard for Personnel Protection
– Lockout/Tagout of Energy Sources – minimum Safety Requirements and OSHA
Standard Number 29 CFR 1910.147 "The Control of Hazardous Energy (Lockout/
Tagout)."

• Sequence of Operation

The CREzd models are made up of a series of accumulation zones, each
zone having an EzLogic® zone controller, an Ezdrive™ zone starter box and
a gearmotor. The sequence of "loading" and "unloading" the conveyor is as
follows:
LOADING THE CONVEYOR - SINGULATION MODE
(Figure 6A)
1. Beginning with the conveyor "empty," and the zone stop signal to the discharge
zone controller "active,"(Refer to the "Auxiliary Connections" section) a load placed
on the conveyor continues forward until it reaches the discharge zone (zone #1).
If two or more loads are placed on the conveyor with a space of less than one zone
length between them, the loads will singulate (separate) during the first few feet of
travel on the conveyor, until a space approximately equal to one zone length exists
between all loads.
2. When load #1 activates zone controller "A", zone #1 stops driving. A signal is
sent to zone #2 indicating that zone #1 is occupied (Figure 6A).
3. When load #2 activates zone controller "B", zone #2 stops driving. A signal is
sent to zone #3 indicating that zone #2 is occupied.
4. The above sequences are repeated until the conveyor is fully loaded.
FIGURE 6A
ZONE #3
FLOW (ZONA)
(FLUJO)
CARTON #3
(CAJA #3)
CONTROLLER "C"
(MÓDULO "C")
UNLOADING THE CONVEYOR - SINGULATION MODE
1. Releasing load #1 is accomplished by "de-activating" the zone stop signal to
the discharge zone (Refer to the "Auxiliary Connections" section). This restores
power to the tread rollers in zone #1. Load #1 will then move forward, causing a
gap between itself and load #2 (Figure 6B).
2. When load #1 clears zone controller "A", load #2 will then move forward, creating
a gap between itself and load #3.
3. This sequence will continue as long as the preceding load continues to move
forward.
FIGURE 6B
FLOW
CARTON #3
(FLUJO)
(CAJA #3)
CONTROLLER "B"
CONTROLLER "C"
( MÓDULO "B")
( MÓDULO "C")
CARTON #3
(CAJA #3)
CONTROLLER "B"
CONTROLLER "C"
( MÓDULO "B")
( MÓDULO "C")
ZONE #2 ZONE #1
(ZONA) (ZONA)
CARTON #2 CARTON #1
(CAJA #2) (CAJA #1)
CONTROLLER "B" CONTROLLER "A"
(MÓDULO "B") (MÓDULO "A")
CARTON #2 CARTON #1
GAP
(CAJA #2) (ESPACIO) (CAJA #1)
CONTROLLER "A"
( MÓDULO "A")
GAP
CARTON #2 GAP
(ESPACIO) (ESPACIO)
(CAJA #2)
CONTROLLER "A"
( MÓDULO "A")
• EZLogic® System
EZLogic® Accumulation System Connections
The CREzd models are equipped with the EzLogic
following basic information may be used as a guide during the installation and
initial setup of the conveyor. For detailed information about EzLogic
components, options, functions, and programming, please refer to the EzLogic
GEN3 Component manual.
Each EzLogic zone controller is equipped with sealed connectors for zone-to-zone
®
communication, solenoid output, and zone stop connections. These connections
are described in the following sections.
ZONE CONNECTIONS
Each zone controller has a cordset terminated with a female micro-connector and
a male micro-connector. This cordset provides power to all the zone controllers on
the conveyor as well as communication between zone controllers (Figure 7A).
All zone controllers are mounted and connected at the factory within each conveyor
section. Connections between sections are made at installation. (See Conveyor
Set-Up on Page 9). The cordset from one zone controller is always connected to
the cordset on the upstream side of it. This is the way the zone controllers know
which direction product is flowing.
The cordset on the infeed end of the conveyor is simply bundled and tied in the
accumulation channel and is not connected. The infeed cordset may be replaced
with an infeed zone terminator (P/N 032.550). Protective caps are provided to seal
unused connectors.
An optional conveyor-to-conveyor connector is required when two conveyors are
joined end-to-end. Please refer to the EzLogic
more information.
EZDrive™ CONNECTIONS
Each zone controller has a built-in run enable output cable to provide a zone drive/
no drive output to the Ezdrive™ zone starter box operating the zone. This cable
is terminated with a female pico-style sealed snap-lock connector. Connection is
made by pushing the cable connector onto the corresponding male connector of
the zone starter box until it snaps in.
Please note that this output is only to be used to operate the zone mechanism of
the conveyor. It is not to be used as an output signal to other control devices. If a
control output is needed, an optional auxiliary I/O module should be used. Please
refer to the EzLogic
AUXILIARY CONNECTIONS
Every EzLogic" zone controller is equipped with an auxiliary port to accept a zone
stop signal, a slug input signal, or a zone wake-up signal by simply connecting
an auxiliary input cable to the auxiliary port of the controller and then wiring the
two wires of the cable to any "dry contact" type switching device, such as a toggle
switch or relay. No other components are required. The default setting is for a
zone stop signal. To use the signal for slug input or zone wake-up, program the
zone controller as detailed in the EzLogic" Gen 3 Component manual.
Note: do not apply a voltage to these wires, or wire more than one controller to any
one contact. Closing the zone stop contacts will place the EzLogic" controller into
"accumulate" mode. The next carton to activate the controller will be stopped and
held in the "stop zone" until the contact is opened. The zone stop feature is used
on all conveyors to control the release of product from the discharge zone. Other
zones may be wired for this feature at any time.
SLUG MODE CONNECTIONS
The EzLogic" accumulation system provides two modes of accumulation which
are user-selectable:
the sequence of operation for each mode, refer to the "Sequence of Operation"
section). The desired mode of operation may be programmed into the zone
controllers at installation (refer to the EzLogic" Gen 3 Component manual for
details). If the user wishes to be able to alternate between singulation mode and
slug mode "on-the-fly," an optional Auxiliary Input Cable (Hytrol P/N 032.563) may
be used. The default mode is singulation mode. If the user desires to operate the
conveyor in slug mode, or if the user wishes to be able to alternate between the
two modes as needed, the following procedures should be used.
SLUG MODE ONLY
Program the zone controllers to operate in "slug mode only" as detailed in the
EzLogic" Gen 3 Component manual.
SELECTABLE SINGULATION/SLUG
1. Install an auxiliary input cable (Hytrol P/N 032.563) on any zone controller of the
conveyor. The cable attaches to the auxiliary port on the controller.
2. Program the zone controller to accept a slug signal. (Refer to the EzLogic" Gen
3 Component manual for details.)
3. Connect the two wires of the Auxiliary Input Cable to any "dry contact" type
switching device, such as a toggle switch or relay.
CARTON #1 4. With the switch contacts open, the conveyor will be in singulation mode. When
(CAJA #1)
the switch is closed, the conveyor is in slug mode.
Note: do not apply a voltage to these wires, or wire more than one controller to
any one contact.
6
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GEN3 Component manual for
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GEN3 Component manual for more information.
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Singulation mode and Slug mode.
accumulation system. The
system
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