Trumeter 7955, Quick Manual

Page: 2 / 24

2
THE DISPLAY
Note:
The Repeat Cycle indicator shows:
÷ during time t÷, and – during time t-.
(see OPERATING MODES)
SPECIFICATION
Display
Black on Silver LCD. 3 digits, height
6.5mm indicating timer value. Mode and
relay status indicators.
Timing Ranges
0.2 - 99.9, 1 - 999 sec
0.01 - 9.99, 0.1 - 99.9, 1 - 999 min
0.01 - 9.99, 0.1 - 99.9, 1 - 999 hrs
Accuracy
Timing
+50 -20ms, or ±0.5% of Set Time,
whichever is greater
Repeat
±0.3% of set time
Batteries
Two non-replaceable Lithium batteries.
10 year or 1million relay operations
expected life
Input
Opto-isolated
Level-triggered or Edge-triggered
Minimum pulse width 20ms
±12 to ±48V dc or ac:
Input impedance 100k
Ω
CONNECTIONS (see page 23)
±48 to ±240V ±10% dc or ac:
Input impedance 470k
Ω
Output
Contacts
SPDT voltage free contacts
Rating
250V AC @ 8A cosØ= 1
250V AC @ 5A cosØ= 0.4
30V DC @ 8A
Reaction time
<20ms
Expected life
8A resistive load, 100,000 operations
2A resistive load, 1,000,000 operations
Installation Category (IEC 664)
Overvoltage category
II
(Pollution degree 2 )
Operating temperature
-10°C to +60°C
Storage temperature
-20°C to +70°C
Altitude
Up to 2000m
Relative Humidity
80% max up to 31°C, decreasing to 50%
max at 40°C