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Disc brake - Power unit CE8L Technical data

Spare parts No. S09580-01

Installation and maintenance Leaet No. M08555-01

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Options No. A08555-01

Hydraulic power unit CE8LTechnical data

Non contractual photographs.Instructions of this manual must be adhered to, to obtain the performance and the safety of operation of the equipment.

Connection of a hydraulic unit No. G08555-01

Oils Leaet No. G08615-02

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1 - PRESENTATION

1-1 Use

The hydraulic power unit CE8L (g.1) is intended to deliver an

hydraulic pressure to open the emergency hydraulic brakes

SH and TH.

1-2 Operating conditions

Working conditions:

- Ambient temperature: -10 °C to +60 °C

- Relative humidity ≤ 70 %

- Dust in atmosphere ≥ 65 µ

- Protection against vertically falling waters.

Other conditions, consult Stromag France.

2 - OPERATION

2-1 Flow diagram

See g. 5.

2-2 Principle (g. 5)

a) Opening of the calipers

When the hydraulic power unit is switched on, the solenoid valve

EV1 (NO) closes and the motor M starts simultaneously. This

motor drives the gear pump P1 which gives the oil pressure al-

lowing the hydraulic calipers to open.

The opening of the pressure switch CP1, included in the working

circuit, stops the motor M when working pressure reaches the

maximum set level. Then, the installation stays under pressurewith the motor M stopped. If pressure lowers down to the minimum

level, the switch closes and starts the pump motor M again.

b) Closing of the calipers and braking

Switching off the motor M and the solenoid valve EV1 brings

the oil back to the power unit reservoir and the pressure back to

zero. Calipers close and braking torque is applied.

c) Manual opening of the calipers

With the ow limiter LD1 closed, the hand pump P2 provides

the necessary pressure to open the calipers, in case of mains

failure or manual operations on the calipers.

Fig. 1

1-2 General characteristics

The CE8L hydraulic power unit is tted with a gear pump and a

motor of 2,2 kW at 1500 rpm for a nominal ow rate of 8,4 l/mn

(on network 50 Hz).

The maximal utilization pressure is 225 bar.

Frequency of operations = 100 operations / hour maximum

The caliper can be installed horizontally (CE8L-H) or vertically

(CE8L-V) (reservoir at the bottom).

See ow diagram g.5 and description g.6.

Calipers are closed by means of a single solenoid valve EV1

(NO). For installations requiring a high level of safety, we advisethe option OP1 (2 EV).

In additional, we recommend a device of permanent diagnosis

of the solenoid valves operation (CS2EV) which allows the

detection of a possible fault .

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2-3 Options

Options of the CE8L power unit are described in the "Options"

leaet quoted in the bottom of the page.

Table 1 below sums up all these options :

Options Description Comments

MS Motor 290/500 VAC 50 Hz or Motor 230/400 VAC 50 Hz with PTC sensor

Other voltages, consult us.

EVS EV coils voltage different from the standard

K1Electrical power unit integrated to the hydraulic power unit,

Input voltage 400V 3 phases 50 Hz.

+ 230V single phase 50 Hz For CE8L standard and CE8L OP1.

For the other voltages (MS and EVS),

consult us.K2

Electrical power unit integrated to the hydraulic power unit,

Input voltage 400V 3 phases 50 Hz.

OP1 Enhanced security return circuit by 2 solenoid valves. Noncumulable options with option Y5.

For monitoring device of the 2 EV(CS2EV), conult us (APS).

To equip the hydraulic unit CE8L-OP1-OP3

with an electrical unit, consult us (APS).

OP1-OP2 Manual lowering with a dead man safety device.

OP1-OP3 Manual lowering with overspeed safety by solenoid valve 24VDC.

CS2EV Monitoring device of the 2 solenoid valves EV1 and EV2,

consult us.

For CE8L-OP1, CE8L-OP1-OP2, and

CE8L-OP1-OP3.

Y5

The hydraulic unit is tted with a proportional pressure limit valve

for a regulated braking or the lowering of the load.

The function of braking on/off is kept.

Noncumulable option with options OP1,

OP2 et OP3.

This option requires a specic electrical

unit according to the control system

(lowering of the load, constant deceleration,

etc..), consult us (APS).

R option enables to limit the full braking

torque, consult us (APS).

OP4 Indicator switch of the position of the main control valve

and of the lowering control valve (if option OP2 or OP3)

OP6

Hydraulic unit for "iron and steel industry" with:

a tight lling port

2 oil level sight glasses in pyrex

no ventilation on the motor

This option enables to work in atmospheres

with high concentration of dust and at

ambient temperature of 60°C in continuous

(90°C at the peak < 2 minutes

6 times per hour maximum).

OP10 Drip tray for hydraulic unit mounted horizontally For CE8L-V (vertical) hydraulic unit, CE8L-K1

and CE8L-K2, consult us

RV Drain valve for reservoir

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Options available requiring an adaptation (APS) :

Options Description Remarques

Z1 At the time of a braking order or a voltage failure, Z1 option allows a

delay of caliper closing by maintaining a voltage on the coil of the

solenoidvalve. (delay of 0,1 to 1,2 second).

Option with specic K2 electrical unit.

APS obligatory. Consult us.

Z2 At the time of a braking order or a voltage failure, Z1 option allows a

delay of caliper closing by maintaining a voltage on the coil of thesolenoidvalve. (delay of 0,1 to 20 seconds).

Option with specic K4 electrical unit. APS obligatory. Consult us.

OP5 Indicator of clogging Consult us.

OP7 Thermostat 80° for the reservoir Consult us.

OP8 Electrical indicator of the oil level in the reservoir Only for CE8L-V (vertical) hydraulic units. Consult us.

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3 - CHARACTERISTICS

3-1 Designation

a) Power unit (table 2)

CE8L - XX - X - XX - voltage- frequency

Unit type

Pressure switch setting

Position

H : horizontal V : vertical

Options

Example:

CE8L-20-V-OP6: hydraulic power unit CE8L with the maximum

of the pressure limit switch set to 200 bar,

tted for a vertical mounting and steel plant

environment.

b) Calipers (table 2)

SH15 - X

Caliper type

Braking force code

Example: SH15-3

Table 2

Example: calipers SH15-3 are related to the supply unit CE8L-18.

All the values LP, LP1 and CP1 are pressures given in bar.

Power

unit

type

Calipers types Main limit

valve

LP

Limit switch

CP1Hand pump

limit valve

LP1SH25 SH18 SH18B SH15 SH9 SH6 SH5 TH9 SHM10 mini/maxi

CE8L - 20 SH25-2 SH18-2 SH18B -- SH9-3 -- SH5-6 -- -- 225 180 / 200 250

CE8L - 18 -- -- -- SH15-3 SH9-2 SH6-3 -- -- -- 205 150 / 180 230

CE8L - 16 SH25-1 -- -- SH15-2 -- -- SH5-5 TH9-3 -- 205 140 / 160 230

CE8L - 14 -- SH18-1 -- SH15-1 SH9-1 SH6-2 SH5-4 -- -- 165 110 / 140 180

CE8L - 11 -- SH18-0 -- -- -- SH6-1 SH5-3 TH9-2 -- 140 85 / 115 160

CE8L - 07 -- -- -- -- -- -- -- -- SHM10 90 55 / 75 100

The maximum number of calipers associated with the CE8L hydraulic unit is in the leaet "Connection of a hydraulic unit" quoted

below.

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3-2 Dimensions

See g.4.

3-3 Hydraulic characteristics

a) Calipers associated

See table 2.

b) Mineral oil

A mineral oil must be imperatively used.

Characteristics conform to the standard ISO 6743/4.

Choose a type in accordance with the temperatures of utiliza-tion.

Grade L-HM or L-HV.

Avoid to mix oils of types HM and HV.

For oils with other characteristics, consult us.

Refer to the leaet "Oils" quoted in the bottom of the page.

The reservoir capacity is :

Horizontal or vertical installation : - High level = 8 litres

- Low level = 6 litres

3-4 Electrical characteristics

a) Motor M

3 phase: 230/400 VAC 50 Hz

2.2 kW, 4 poles

Protection IP 55 class F

Aluminium body, metallic terminal box, brass cable gland

Other 3 phase voltage on option MS :

290/500VAC 50Hz

230/400VAC 50Hz with PTC sensor

To specify according to table 3.

b) Solenoid valve EV1

Coil under 230 V RAC ± 10%, 50 or 60 Hz single phase with a

rectier bridge in the connector (20 W).

Other optional voltages, option EVS:

48, 110 V RAC, 50 or 60 Hz - 24 V DC

c) Pressure limit switch CP1

- Single-pole and snap-acting contact "OC"

- Protection: IP 66

- 240 V AC, 1,5 A

- 250 V DC, 0,1 A

Table 3

Mains 3 phases Motor ∆/Y

Frequency 50 Hz

220-230-240VAC ±10% 50Hz230/400VAC 50Hz ∆ STD

230/400VAC 50Hz ∆ + PTC MS

380-400-415VAC ±10% 50Hz230/400VAC 50Hz Y STD

230/400VAC 50Hz Y + PTC MS

440VAC ±10% 50Hz 255/440VAC 50Hz Y APS

500-525VAC ±10% 50Hz 290/500VAC 50Hz Y MS

660-690VAC ±10% 50Hz 400/690VVAC 50Hz Y APS

Frequency 60 Hz

220-230-240VAC ±10% 60Hz 230/400VAC 60Hz ∆ APS

265-277-290VAC ±10% 60Hz 230/400VAC 50Hz ∆ STD

380-400-415VAC ±10% 60Hz 230/400VAC 60Hz Y APS

440-460-480VAC ±10% 60Hz 230/400VAC 50Hz Y STD

575-600VAC ±10% 60Hz 290/500VAC 50Hz Y MS

STD = standard / MS = option / APS = adaptation, consult us.

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d) Wiring examples (g. 2 and 3)

The whole wiring connections are to be realised by the customer

following examples g. 2 and 3.

Motor M

3 phase

mains + T

Single phase

supply

Braking / release control

Pressure limit

switch CP1

provided by Stromag France

Q1

KF

KM1

KM1x 1

P

1

4

2

5

3

6

11

10

14

9

13

12

M3

0V 230V

0V

I >

T1F1

Q1

Q1

H1

B1

F2

I > I >

F1

KF

KM1

x 1P

87

11

10

14

9

13

12

Q1

KM1

1

4

2

5

3

6

M3

I >

Q1

Q1

I > I >

B1

H1

EV1

Fig. 3Fig. 2

EV1

provided by Stromag France

Motor M

3 phase

mains + T

Braking /

release control

Pressure limit

switch CP1

On option, an electrical control system K1 (g. 2) or K2 (g. 3) is

mounted integral with the hydraulic unit to simplify the customer

wiring. The customer supplies the alternative current and brak-

ing/release control (KF). See "Options" leaet quoted below

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3 3 2

50 37,5 37,5110200

695

4 0

8

3 0

4 7 8

Fig.4 - Dimensions

Weight : 54 kg without oil

Representation: CE8L-H (horizontal position)

4 holes Ø9

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Hand pump P2

Power unit

Caliper Caliper

Fig. 5 - Flow diagram of the hydraulic power unit

1G

CP1

M P1

LP

EV1

LD1

1Q

PP

CA1

CA2

LP1

CA4

CA3

Components:

BR1 Filling port

BV Draining port 1/4"G

CA1 Check valveCA2 Check valve

CA3 Hand pump check valve

CA4 Hand pump check valve

CA5 Check valve

CP1 Pressure switchCR Suction strainer

EV1 Solenoid valve

F Filter

LD1 Flow limiter LP Main pressure limit valve

LP1 Hand pump pressure limit valve

M Electrical motor

P1 Gear pump

P2 Hand pump

PP Pressure portR Reservoir

1G Manometer

1Q Isolation cock of the manometer

F

CA5

BVR

BR1

CR

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Solenoid valve EV1

Manometer 1G

High level

sight glass

Filling port BR1 (breather

replaced by a tight plug for

option OP6)

Pressure switch CP1

Motor MReservoir R

Low levelsight glass

Fig. 6 - Components of the hydraulic unit CE8L standard

Isolation cock 1Q

Filter F

Flow limiter LD1

Hand pump P2Main pressure limit valve LP

Pressure limit valve LP1

Pressure port PP

Output 1/2"G

Pressure port PPHand pump lever

Draining port 1/4"G (BV)

LP

Hand pump P2

(shown in horizontal version)

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