MEERSTETTER LTR-1200, User Manual

Page: 11 / 18

User Manual LTR-1200
31.07.13 TB
22.10.14 SK
Page 11 (18)
5171C
3.2.3 LED
Dual Color Status LEDs
LED
Sources (grouped)
S1 (top) LTR Components (HMI, Fan Controller)
S2 (bottom) Built-in Devices (LDDs, TECs)
Grouped status code is prioritized, i.e. if one output stage is running, the grouped LED shows 'Run', if one
device has an error, the grouped LED shows 'Error'.
LED Status Description (S1, S2)
Color
Pattern Signification
Green Slowly blinking 'Ready' status (no Error)
Green Blinking fast 'Run' status (no Error)
Red Static on 'Error' status, output stages disabled
Red Slowly blinking Unknown Device Status, but no Error
3.2.4 Digital I/O
3.2.4.1 Pinout
Type DIG IO Label LDD-112x TEC-1122/1123 TEC-1089/1090 LTR-1200
Input 1 IN1  RES8 RES8 RES1
Special
Function
available
on request
Input 2 IN2  RES7 RES7 RES2
Input 3 IN3  RES6 RES6 RES3
Output 1 OUT  RES5 RES5 RES4
GND
 Digital IO Ground
All digital I/Os are ESD-protected and have a series and pull-down resistor.
3.2.4.2 Characteristic
Symbol Parameter Comments Min Typ Max Units
Digital Isolator Characteristics
V
ISO
Isolation Voltage 1 - 2.5 kV
f
TRANSFER
Transfer Frequency NRZ (No Return to Zero) 0 25 MHz
t
PHL
, t
PLH
Propagation Delay 45 60 ns
Input Characteristics (Digital Isolator)
V
IH
Logic High Input Threshold 2.31 V
V
IL
Logic Low Input Threshold 0.99 V
V
IMAX
Max Input Voltage -0.5 5.5 V
Output Characteristics (Digital Isolator)
V
OH
Logic High Output Voltage Output Current 20uA 3 3.3 V
V
OL
Logic Low Output Voltage Input Current 20uA 0 0.1 V
V
OHL
Logic High Output Voltage (Hi Load) Output Current 4mA 2.8 3.1 V
V
OLL
Logic Low Output Voltage (Hi Load) Input Current 4mA 0 0.4 V
ESD Protection (between Digital Isolator and Connector)
V
PP
ESD Discharge IEC61000−4−2 100 kV
R
A
Series Resistance 170 200 230 Ω