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PSR-1, NET-4, NET-7, NET-7M Connections and Ratings
Wiring
Two relays are provided on the PSR-1
for local control of alarm and trouble
indication. These relays are controlled
by the MXL through CSG-M output
logic. The alarm relay transfers if the
local alarm degrade signal is activated
by an initiating control board (CZM-4 or
ALD-2I). This occurs when the initiating
board cannot communicate with the
MXL. Likewise, if any local module,
including the PSR-1, loses communica-
tion with the MXL, the trouble relay
transfers. When the system is operat-
ing normally, these relays are con-
trolled by output logic only.
Auxiliary power for CZM-1B6 and
PS-5A (TB3)
A Class A power limited output is provided
on TB3, terminals 3-6 for use with the
CZM-1B6, PS-5A and PS-5N7.
All wiring must be in accordance with
article 760 of NEC and local building
codes.
The power for CZM-1B6, PS-5A and
PS-5N7 is power limited to NFPA 70
per NEC 760.
You may connect a maximum of 40
CZM-1B6s to the TB3 power source.
This power may be wired Class A, as
shown. Class A wiring can support a
maximum of 20 CZM-1B6s, 4 ohms max.
T-tapping is not allowed.
Electrical ratings:
18-31 VDC
2A max
6
5
4
2
3
1
+
+
_
_
TB3
CZM-1B6
NO T-TAPPING ALLOWED
CLASS A WIRING
18-31 VDC
2A MAX
POWER LIMITED TO
NFPA 70 PER NEC 760
4 OHMS MAX (TOTAL)
18 AWG MIN
CZM-1B6 Power, Class A WiringAlarm and Trouble Relays Wiring
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