EQUIPMENT: T1200-C
PUBLICATION: MARINEC-P-A
ISSUE No. & DATE: 3 02/14
© 2014 Thorn Security Ltd PAGE 61 of 67
Registered Company: Thorn Security Ltd. Registered Office: Dunhams Lane Letchworth Garden City Hertfordshire SG6 1BE
Auxiliary Supply
0.5 1 1 N/A N/A
(battery operation)
28.4 – 19.6 28.4 – 19 28.4 – 19 N/A N/A
(mains operation)
28.4 – 25.8 N/A N/A
Protection [Electronic]
(A)
0.93 1.85 1.85 N/A N/A
Cable requirements
No special requirements. Cable resistance and current load must allow a voltage
at the end-of-line which is above the minimum operating voltage of the equipment
Repeater Output T1216-C/T1232-C Panels
Maximum panel to
repeater cable length
Up to 2000m, dependent on repeater load and cable resistance.
Voltage drop between panel and repeater should not exceed 2Vdc.
RS485 serial data 9600baud.
Electronic, current limited.
RS485 shielded cable: Two pairs for data + One pair muster control.
Two core low impedance cable for power.
RS485 Cable Specification
RS422/RS485 screened data cable.
Number of
Conductors:
Two Pairs
(Data Only)
(24Vdc Power & Data
Only, or Data & Muster
Four Pairs
(24Vdc Power, Data &
Muster Control)
Part
Number
Resistance
Part
Number
Resistance
Part
Number
Resistance
Alpha Cable
Belden Cable