Pinnacle Systems SLT Series User Manual

Page 28

A-4

Appendix A:

Regulations & Guidelines for Safe Operation

SLT Series

OSHA R

OSHA Re

eegula

gula

gulations

tions

1910.217 (C) (3) (iii)
Safeguarding the Point of Operation

(iii) A presence sensing point of operation device shall

protect the operator as provided in paragraph (c) (3) (i)

(a) of this section, and shall be interlocked into the control

circuit to prevent or stop slide motion if the operator ’s

hand or other part of his body is within the sensing field

of the device during the downstroke of the press slide.

(a) The device may not be used on machines using

full revolution clutches.

(b) The device may not be used as a tripping means

to initiate slide motion.

failure within the system does not prevent the

normal stopping action from being applied to

the press when required, but does prevent the

initiation of a successive stroke until the failure

is corrected. The failure shall be indicated by

the system.

(d) Muting (bypassing of the protective function) of

such device, during the upstroke of the press

slide, is permitted for the purpose of parts

ejection, circuit checking, and feeding.

(e) Refer to ANSI B11.19-2003 for calculating safety

light curtain distance from the point of operation.

(f) Guards shall be used to protect all areas of entry

to the point of operation not protected by the

presence sensing device.

1910.217 (C) (3) (iii)
Additional requirements for safeguarding

Where the operator feeds or removes parts by placing

one or both hands in the point of operation and a two

hand control presence sensing device or Type B gate or

movable barrier (on a part revolution clutch) is used for

safeguarding:

(i) The employer shall use a control system and a

brake monitor which comply with paragraphs

(b) (13) and (14) of this section.

(e) Inspection, maintenance, and modification of

presses-
(i) It shall be the responsibility of the employer

to establish and follow a program of periodic

and regular inspections of his power

presses to insure that all their parts, auxiliary

equipment, and safeguards are in a safe

operating condition and adjustment. The

employer shall maintain records of these

inspections and maintenance work

performed.

1910.212
General requirements for all machines (covers press
brakes, hydraulic and pneumatic machines not
covered by mechanical power press standards)

(a) Machine guarding - (1) Types of guarding. One

or more methods or machine guarding shall be

provided to protect the operator and other

employees in the machine area from hazards

such as those created by point of operation

ingoing nip points, rotation parts, flying chips and

sparks. Examples of guarding methods are:

barrier guards, two-handed tripping devices,

electronic safety devices, etc.

NOTE: These are only partial reprints, refer to your

Federal Register for total construction, control reliability,

and machine guarding requirement s for the subject

machine being guarded for all applicable OSHA

Standards.