Banner Interface Modules - Manual (Page 5)

Models SC-IM9.. – Safety Controller Interface Modules
P/N 131845
5
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Figure 2. Generalized one-channel EDM-monitoring hookup of the SC-IM9C
WARNING . . .
Use of Arc Suppressors
If arc suppressors are used, they MUST be installed across the actuator coil of the machine primary control elements (MPCE1, MPCE2, etc.). NEVER install
suppressors directly across the output contacts of the Interface Module. It is possible for suppressors to fail as a short circuit. If installed directly across the
output contacts of the Interface Module, a short-circuited suppressor will create an unsafe condition which could result in serious injury or death.
WARNING . . .
MPCE Monitoring
All machine control primary elements (MPCEs) must be of forced-guided (mechanically-linked) design to allow the EDM circuit to detect unsafe failures.
This monitoring extends the safe switching point of the Safety Controller and the SC-IM9.. Interface Module to the MPCE elements. For this monitoring to be
effective, a minimum of two redundant MPCEs are required to control each hazard. This is to detect the unsafe failure of one MPCE (e.g., a welded contact), while
stopping the hazard and preventing a successive machine cycle with the second MPCE.
If the MPCEs are the last electrically controlled device generating the hazard (i.e., not relays or contactors) and they do not have forced-guided, captive
contacts to monitor (such as a solenoid), then the user must ensure that failure or fault of any single component of the MPCEs will prevent a successive
machine cycle and will not result in a hazardous situation.
13 21 33 43 A1
K1
14 22 34 44 A2
13 21 33 43 A1
14
0V 3B 3A 2B 2A 1B 1A
S03 S02 S01
22 34 44 A2
13 21 33 43 A1
14 22 34 44 A2
13 21 34 43 A1
14 22 34 44 A2
13 21 33 43 A1
14 22 34 44 A2
13 21 33 43 A1
14 22 34 44 A2
SC22-3
Safety Controller
Machine Control
Supplied
Terminal Block
Safety Controller EDM Inputs,
as Configured by User
1-Channel EDM Hookup
K2
K1
K2
K1
K2
0V
+24V dc
S03 S02 S01
Terminals 21-22
used for monitoring
of each contactor
MPCE
1
MPCE
2
MPCE
3
+24V dc
MPCE
4
MPCE
5
MPCE
6
+24V dc
MPCE
7
MPCE
8
MPCE
9
NOTES:
• Gray-shaded areas are pre-wired and require no further connections. The user is responsible for wiring SC-IM9..
Safety Outputs (13/14, 33/34, 43/44) and N.C. monitoring contacts (21/22).
• Model SC-IM9C shown; hookup for models SC-IM9A and SC-IM9B is similar.