Secutron MR-2900 Installation Manual page 24

NC 8
NO 7
COMMON 9
Figure 19: MRI-M500R Wiring for Form C Relay Use
Figure 20: MRI-M500X Wiring
Style Y (Class B) Bell Circuit
Regulated 24 FWR
Figure 21: Style Y (Class B) Bell Circuit
Wiring
Note: The inrush current of some devices may cause the current to exceed the 1.5A current limit
momentarily.
18
5 NC
4 NO
6 COMMON
This is a 2-wire Style Y (Class B) power-limited and
supervised signalling (notification appliance) circuit.
Devices and the 10 k end-of-line resister are connected
as illustrated in Figure 21. Maximum wire lengths are
EOL
shown in Table 4. Use only approved devices.
10 k
EOL-103