Manual
Page 4 | ENG
Screw terminal 1:  no function
Screw terminal 2:
Timer Enable Input:
       time measurement as long as 
the input is active
NPN:    active for low level
Input resistance:  approximately 1 MOhm
Low level:    0…0.7 V DC
High level:    3…30 V DC
PNP:     active for high level
Input resistance:  approximately 100 kOhm
Low-level:    0…0.7 V DC
High-level:    4…30 V DC
Screw terminal 3: 
Reset input:     active for negative edge contact 
input / Open Collector NPN 
(switching at 0 V DC)
Low level:    0…0.7 V DC
High level:    3…30 V DC
Min. pulse duration:  50 ms
Input resistance:  approximately 2.2 MOhm
Screw terminal 4: 
Electrical locking of the reset key
Contact input / Open Collector NPN 
(switching at 0 V DC)
Low level:    0…0.7 V DC
High level:    3…5 V DC
Input resistance:  approximately. 2.2 MOhm
Input not active:  Reset key locked 
Input active (contact with GND): 
      Reset key unlocked
Screw terminal
 5: 
Time range switching (Mode)
contact input / Open Collector NPN 
(switching at 0 V DC) 
Low level:    0…0.7 V DC
High level:    3…5 V DC
Input resistance:  approximately. 2.2 MOhm
Function:    see table 2
Note: 
If the time range is changed during operati-
on,
 the device must be reset, otherwise the 
counting value will not be reproducible.
Power supply:
  Non-replaceable lithium battery  
  (lifetime approximately. 8 years at 20°C)
Working temperature: 
  –10…+55 °C, relative humidity < 85%, 
  without condensation
Operating temperature:
  –10…+60 °C
Storage temperature:
  –20 .. +70°C
Altitude:  up to 2000 m
Backlighting: 
  must be powered by an external elecrical 
  source (24 V ±20%, 50 mA)
  SELV, CLASS II (Limited Power Source) 
  ext. fuse protection: T0.08 A
Input specifications, terminal assignment and adjustable time ranges (DC versions)
The time range is set via a control input (screw terminal 5).
Screw terminal No. 1 No. 2 No. 3 No. 4 No. 5 No. 6 No. 7 No. 8
Designation
Model
INP A INP B Reset Reset 
Enable
Time range (Mode) GND BL 
–
BL 
+
6.134.012.8x0
no function
Timer Enable Input
NPN
Reset input NPN
NPN reset key locking input, 
Contact with GND, key free
not active
=
99999 h 59 m
contact with 
GND
=
99999,99 h
GND = 0 V DC
backlight (–)
backlight (+)
6.134.012.8x1
6.135.012.8x0
NPN
not active
=
9999 h 59 m 
59 s
contact with 
GND
=
9999999,9 s
6.135.012.8x1
Table 2
t










