Switch
Off
On
max. 0.4 Nm
3.5 in-Ibs
max. 2.5 mm²
AWG 14
*)
14
22
13
21
B
+/- d.c.
A
-/+ d.c.
*)
size 0
Jumper
Off
On
Note:
Non-sheathed cables of intrinsically and non-intrinsically safe circuits which are routed in the same conductor bundle or
cable duct have to be isolated by means of an insulating layer or an earthed metal intermediate layer in accordance with
EN 60079-14. Isolation is not required if sheathed cables or cable shields are used in intrinsically or non-intrinsically safe
circuits.
4. Configuration
Attach
number label
for
configured bus/MCM address.
DEHNrecord
DRC MCM XT
BS BA1 BA15 BXT
marking system
check
1 0 1 0
Dezimal
0 0 0 1
1*
10*
Dual
Set the number of
SPDs to be monitored
(max. 10)
Select a bus/MCM
address (1...15)
On
Off
No
. of monitored SPDs
8 4 2 1 8 4 2 1
Address
1 0 1 0
0 0 0 1
1*
10*
*) Example
Dezimal
Dual-Code
Wertigkeit
8 4 2 1
1
⇔
0
0 0 1
2
⇔
0 0 1 0
3
⇔
0 0 1 1
4
⇔
0 1 0 0
5
⇔
0 1 0 1
6
⇔
0 1 1 0
7
⇔
0 1 1 1
8
⇔
1 0 0 0
9
⇔
1 0 0 1
1 0
⇔
1 0 1 0
1 1
⇔
1 0 1 1
1 2
⇔
1 1 0 0
1 3
⇔
1 1 0 1
1 4
⇔
1 1 1 0
1 5
⇔
1 1 1 1
DIP switch
0 = Off
1 = On
Bus termination (RT)
Activation/deactivation of the bus
termination for the DRC MCM XT
monitoring module
Note:
The bus termination can only be activated/deactivated via jumper or slide switch
if the plug-in part is removed!
Jumper
Slide switch
*) Illustration of the switch contacts in their normal state (all SPD to be monitored
are OK) with applied supply voltage and plugged-in
DRC MCM XT.
Optional remote signalling contakt
Galvanically isolated switch contacts
integrated in the DRC MCM XT monitoring
module.
Serial RS-485 interface
(only in case of bus connection)
Pin A (+data)
Pin B (-data)
Recommendation: twisted two-wire
cables should be used as a standard
Tipp:
Use tweezers!
max. 350 V d.c. / 120 mA
250 V a.c. / 70 mA
Pin: 13-14 make contact (no)
21-22 breake contact (nc)
Voltage Supply
UN 18...48 V DC; max. 100 mA
Pin: +/-; -/+
Recommendation DEHN:
power supply unit
PSU DC24 30W
(Part No. 910 499)
Quick Start Guide DEHNrecord
DRC MCM XT
page 4
3. Wiring