ACM - Access Control Module(s)
10
ACM - ACCESS
CONTROL
MODULE(S)
The ACM (Access Control Module) provides the Readers, Inputs and Outputs that are
used in access control. An iSTAR Pro can contain either one or two ACMs.
Figure 5 shows the components, switches, and LEDs described in this guide.
FIGURE 5. ACM Access Control Module Layout
RM4 Readers
Either Wiegand signaling or Magnetic signaling read heads are connected to RM-4s or
RM-4Es. The RM-4 or RM-4E readers are interfaced using STAR1 through STAR8.
Pin 1 for each connector is shown in the preceding diagram. It is important that the ports
are wired as follows:
TABLE 4. Pin Signals and Colors
STARx Pin Signal Color
1 +12 VDC Red
2 Tx+ / Rx+ White
3 Tx- / Rx- Green
4 GND Black
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