PS-x25T/TU/LT
Intelligent Dual-Relay Secured Power Supply
Installation Manual
1
1. Introduction
The PS-x25 family of secured power supplies converts AC power to 12
VDC power limited output (see Section 2) with an integrated battery
charger, designed for use with all of Rosslare's convertible and secure
access controller units (ACU).
The PS-x25 family contains two power supplies, one for the lock
output and the other for the ACU.
This design isolates the lock from the ACU, securing the functionality
of the lock even if the ACU is tampered with.
When a valid code is entered via the ACU, it communicates with the
PS-x25 family using a Rosslare proprietary protocol sending a
command to activate the lock or auxiliary relay.
Similarly, the Release-to-Exit (REX) button is attached directly to the PS-
x25 unit.
If the data line between the ACU and the PS-x25 unit is cut, the system
immediately detects that the data line has been tampered with and
generates a one-minute siren and closes the lock output. In addition,
the auxiliary relay can be activated by the ACU.
A sealed lead acid battery charger is built-in to provide backup power
for the ACU and the lock. The PS-x25 can also power an external
speaker to annunciate bell and siren tones.
Figure 1: PS-A25T/TU/LT Figure 2: PS-C25T/TU/LT
2. Technical Specifications
2.1 Electrical Characteristics
PS-C25T* PS-C25TU
Input
230 VAC, 50 Hz, 0.14 A 16 VAC (25 VA)
x25LT models: 16 to 24 VAC (25 VA)
Internal
Transformer
230/16 VAC, 25 VA N/A
DC Output
DC output: 11.7~13.2 VDC, 1 A max. combined ACU output
and lock power supply
Lock Output
5 A, SPDT relay.
Max Switched current: 5 A
Max Switched voltage: 150 VDC or 300 VAC
UL Rating: 5 A at 30 VDC or 5 A at 125 VAC
Auxiliary
Output
5 A, SPDT relay.
Max Switched current: 5 A
Max Switched voltage: 150 VDC or 300 VAC
UL Rating: 5 A at 30 VDC or 5 A at 125 VAC
Speaker
In casing In casing External
Speaker Output
8 Ohm, 0.25 W (minimum) for bell chime and siren alerts
Space for
Backup Battery
No Yes
Battery Backup
N/A Built-in charger for sealed UL certified 7 Ah
battery lead acid or gel
Maximum charge current 1.2 A
Automatic switch over to stand-by battery when
AC fails
Rosslare proprietary protocol
*Model not UL listed
2.2 5BEnvironmental Characteristics
Operating Temperature
-10°C to 50°C (14°F to 122°F)
Operating Humidity
0 to 85% (non-condensing)
2.3 6BPhysical Characteristics
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