Bosch IOS 0020 A 20 mA Communication Module - Manual (Page 13)

English 4.998.137.266 Product description IOS 0020 A
13 / 32
ST − FIR / PRM1 / deh
610−4.998.153.974 / A2
Functional description
d The 20 mA communication module provides a S1 interface, a RS232 interface and a 20 mA
(current loop) interface to connect the DR 2020 log printer.
Wiring
Pos. Marking Connection
1 S1 IN
S1 Interface
2 S1 OUT
S1 Interface
3 TX −
4 TX +
20 mA Interface
5 RX +
20 mA Interface
6 RX −
7 AUX − +24 V DC / max. 1,3 A
8 AUX +
/ ,
power supply
20 RXD
21 TXD RS232 Interface
22 GND
Pin−assignment of DSUB 9−pin plug
PIN−No. Connection
2 TxD0
3 RxD0
5 GND
Technical Specification
Input voltage (min − max) 20 V DC − 30 V DC
Max. current consumption 6.9 mA (2.6 mA without load)
Max. output current 1,3 A at 24 V DC (at the 20 mA interface)
Maximum length of line 1000 m (1093.6 yards)
Safety class II as per IEC 60950 / EN 60950
EMI / EMC protection EN 50081−1 / FCC Part 15
Protection class IP 30 as per IEC 60529
Operating Temperature −5
_C . . . 50 _C (23 _F . . . 122 _F)
Storage Temperature −20 _C . . . 60 _C (−4 _F . . . 140 _F)
Permissible relative humidity max. 95% non condensing
Housing material and color ABS plastic Polylac PA−766 (UL94 V−0),
semi gloss anthracite, RAL 7016
Dimensions (H x W x D) approx. 127 x 96 x 60 mm (5.0 x 3.8 x 2.4 inches)
Weight approx. 175 g (6.2 ounces)
3 4 5 6 7 8
20 21 22
1 2
5 4 3 2 1
9 8 7 6