E8700 Unityer

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The model 8700 Unityer uses AC Vector Drive technology for tying functions while side and top compacting functions are powered by a small off-board HPU. The 8700 is based on the venerable 9700 product line and shares many common parts.

Ovalmatic 8700 UNITYER comprises tying and compacting functions built into a single station and offers the following features and benefits:

  • Drives: All functions are gearmotor driven using AC vector drives; no hydraulic oil clean-up or environmental concerns
  • Direct Drive: All gearmotors are mounted directly to their drive shafts; no belts, chain, couplers or other wear components are used in the drive system.
  • AC Vector Drives: Decentralized, closed loop AC Vector drives ensure controlled acceleration, smooth operation and less wear on all moving components. Decentralized drives are mounted on or near the gearmotors which removes major heat producing components from the control panel
  • Twister: All twisting functions are driven by main-shaft mounted cams and drive gear ensuring the Twister cycle is repeatable and can never be “out of time”
  • Track: Time proven low friction track design partnered with Ovalmatic Quality Wire eliminates the need for wire lubrication resulting in contaminate free pulp bales.
  • Re-Feed: If the feed cycle is not completed, wire is automatically drawn back and another feed attempt is made.
  • PLC Control: On board PLC control manages time critical functions.
  • HMI: Combines operator controls, machine data, diagnostics and maintenance functions into an organized, menu driven, machine control interface.
  • Side and Top Compactors – side and top compactors are driven by a small, off-board hydraulic power unit. A regenerative hydraulic circuit improves Top Compactor speed.
  • Side Compactor – Fully floating side compactor arms align the bale stacks without dragging the stacks across conveyor chains.
  • Drives: Conveyor gearmotors are mounted directly to the drive shafts; no belts, chain or couplers are used in the drive system.
  • Adjustable: Conveyor chains are laterally adjustable allowing conveyor chain positions to be adjusted for the bale width.
  • Bale Switches: Unlike photocells which can be fouled by pulp dust, the 8700 conveyor uses a spring-loaded pivoting roller and proximity sensor to determine positive bale position.

OVALMATIC® MODEL E8700 UNITYER STANDARD SPECIFICATIONS

TYING WIRE RECOMMENDED:

OVALMATIC® Quality Unitizing Wire

HYDRAULICS:

Self contained hydraulic power unit using Parker directional valves and Parker axial piston pump

COMPACTING FORCES:

Top Compactor: 9,980 kgf (22,000 lbs.) Side Compactor: 2,000 kgf (4,400 lbs.)

COMPACTOR OPENINGS:

Up: 2360 mm (92.9 in.) Down: 1260 mm (49.5 in.) Side Out: 2051 mm (81 in.) Side in: 957 mm (37.7 in.)

ELECTRICAL SERVICE:

380-575 VAC, 3PH, 50/60 Hz, WYE with solid ground, 5KVA supply Excluding conveyor and hydraulic unit power requirements

ELECTRICAL MOTORS:

Feed/Tension: 3.7 kW (5HP) NORD gear motor with de-centralized VFD
Twister Head: 1.5 kW (2 HP) NORD gear motor with de-centralized VFD
Conveyor Drive: Two 1.5 kW (2 HP) 380-575 VAC, 3 PH, 50/60 Hz reversible NORD gear motor Hydraulic Unit: 11 kW(15 HP) NORD pump motor,
Optional:1.5 kW tank heater
All motors are supplied with equipment. Motor starters or variable frequency drives for conveyors, hydraulic units and contactor for optional tank heater, are customer supplied.

ELECTRICAL INTERLOCKS:

Discrete I/O interlocks Standard: Ethernet, Profibus

ELECTRICAL CONTROL:

PLC: Siemens 1200 Series with Maple Systems HMI
PLC: (Optional) Allen Bradley Control Logix 5370 series with Maple Systems HMI Control Voltage: 24 VDC
Motor Control: NORD de-centralized drives

ELECTRICAL COMPONENTS:

All components meet CE/UL/CUL standards

ELECTRICAL WIRING:

Proximity Switches with connectors: 0.21-0.33mm2 (24-22 AWG) stranded cable Standard: 0.52mm2 3.31mm2 ( 20-12 AWG) stranded cable
Primary: 5.26 mm2 (10 AWG) stranded cable

CHAIN CONVEYOR:

Standard: Chain conveyor – powered forward/reverse, 9 mpm (30 fpm). Conveyors are controlled by customer

CONVEYOR GAP:

1372 mm (54 in.)

CONVEYOR HEIGHT:

Minimum 533 mm (21 in.) min.

COOLING:

Air/oil Heat Exchanger

PNEUMATICS:

Required for auto air blast
5.5-6.9 Bar, 57 L/min. (80-100PSIG, 2 SCFM) Air supply must be clean and dry Optional: Wire Lubricator
Optional: Twister Pinion Lubricator

COMPACTOR OPENING

Standard: 2057mm (81in) wide x 2340mm (90in) tall Optional: Other compactor ranges available

MACHINE WEIGHT:

Standard Unityer: 6800 kg (15,000 lbs.)

MACHINE HEIGHT:

Standard: 3825 mm (150.6 in.) at 508 mm (20.0 in.) conveyor height, (Minimum Conveyor Height)

MACHINE WIDTH:

4785 mm(188.4in) (Excluding Coil Carrier)

OVAL International® specifications are subject to change without notice

E8700 Unityer Product Brochure