SECTION 3 — INSTALLATION OF COMPONENTS
SSC-500 Hydraulic Press Solid-State Control
Rockford Systems, LLC
Call: 1-800-922-7533
21
(Continued on next page.)
PART NO. LLD-701 - SUPERVISORY CONTROL STATION
(Required for multiple operator stations)
When multiple operator stations are required, this supervisory control station is furnished separately for each oper-
ator station. Please refer to the electrical control schematics furnished with your order for proper wiring of each
station.
Other Required Components
(Not supplied as part of standard package unless specifically ordered)
MAIN POWER DISCONNECT SWITCH
A main power disconnect switch may have been supplied in this control package shipment, either in a custom control box or separately. This switch
is designed to disconnect the primary voltage to the press and lock it out. Please refer to the enclosed wiring schematics for proper wiring of this
switch, if furnished separately.
ANSI Standard B11.2 requires that:
1.
A main power disconnect switch capable of being locked in the “Off” position shall be provided with every power press control system.
2
. If the machine already has a main power disconnect switch, it must be checked for the “locking off” and lockout feature. Some switches use
construction which can be easily altered mechanically to comply with this requirement. If this is not possible, or an electrical disconnect switch is
not provided, then you must obtain and install a proper disconnect switch. (For proper disconnect switch, please contact Rockford Systems, LLC)
MOTOR STARTER
A nonreversing motor starter may have been supplied with this control package. The main purpose of this starter is to drop out the main drive motor
and the hard-wired emergency-stop relay when a power failure occurs. Please refer to the enclosed wiring schematics for proper wiring of this
starter. If an existing starter is used, a 120 VAC coil is required.
ANSI Standard B11.2 requires that:
1.
The motor start button shall be protected against accidental operation.
2.
All mechanical power press controls shall incorporate a type of drive motor starter that disconnects the drive motor from the power source in
the event of control voltage or power source failure. It shall also require operation of the motor start button to restart the motor when voltage
conditions are restored to normal.
The above requirements are normally met by using a magnetic motor starter. This starter operates with a 120 VAC coil which is powered from the
secondary of the control transformer on the control panel. Refer to the electrical schematics supplied to obtain details of how to wire the starter and
associated motor start/stop push buttons. If a new magnetic motor starter is required, please contact Rockford Systems, LLC
CUSTOM OR SPECIAL CONTROL BOX
Instead of the standard hydraulic control box, you may have ordered and received a custom or special control box. This box usually includes a mag-
netic motor starter and disconnect switch complying to the previous requirements. Be sure to wire in primary voltage and components to terminals
as indicated on the enclosed wiring schematics. 120 volt electrical power to hydraulic controls, operator controls, solenoids, etc., must be obtained
from the furnished transformer with isolated secondary.
COLLATERAL EQUIPMENT
All collateral press room and plant equipment such as spring or air-slide counterbalances, die cushions, feeding equipment, and robots must be
safeguarded if they create hazards to personnel.
POINT-OF-OPERATION SAFEGUARDS
For compliance to ANSI B11.2 Safety Standard, please refer to
Section 9—Methods of Safeguarding
, for examples of point-of-operation safeguards
for presses.
Photo 3.12
