Omron MC4700 - Figure 10-5 Connecting with One Normally Open One Normally Closed Safety Outputs

10
OMRON SCIENTIFIC TECHNOLOGIES INC.
Fremont CA USA
Tel: 1/888/510-4357 in USA and Canada
© OSTI 1209 PN99584-0050 Rev. E
Original Instructions
42
10.2.2 CONNECTING VIA ONE NORMALLY OPEN ONE NORMALLY CLOSED SAFETY RELAY OUTPUTS
See Figure 10-5 for preferred connection diagram for a One Normally Open, One Normally Closed
contact arrangement control circuit.
TB1
Terminals on Main Board
Line /
24 VDC
Neutral /
0 VDC
TB2
Terminals on Relay Board
OSSD 1
OSSD 2
TB3
Auxiliary
Preferred Connection Diagram for One Normally Open, One Normally Closed Contacts
MPCE 1
MPCE 2
System control voltage
arc suppressor
arc suppressor
Notes:
Arc suppression devices should only be
installed across the coils of the machine control
relays. Never install arc suppressors across the
contacts of the safety light curtain. Failure of the
arc suppressor in a short condition, across the
contacts, will result in an unsafe condition.
No external power is to be appl ied to termi nals
on TB7.
The relay contacts on the MPCE1and MPCE2
must be force-guided contacts. To activate
this function, J umper 2 on the main board needs
to be installed in the ON position. See Figure 3.5,
item 22.
Verify correct voltage requirement
before appl ying power.
Machine control contacts
MPCE 1
MPCE 2
1
2
3
1
1
A N.C. or N.O. Remote Start input is selectable;
a momentary N. O contact is shown. The selection
jumper, Jumper 1 is located under the lid.
See Figure 3-5, item 19.
4
TB7
Terminals on Main Board
1
START
MPCE 1
MPCE 1
2
2
3
4
2
MPCE
1
2
1
2
Program
Sel 1
Sel 2
Must be accessible only by key.
MCS
Figure 10-5 Connecting with One Normally Open One Normally Closed Safety Outputs