SEW-Eurodrive R...7 Series Operating instructions

*29137454_0819*
Drive Technology \ Drive Automation \ System Integration \ Services
Addendum to the Operating
Instructions
Gear Unit Series R..7, F..7, K..7
Gear Unit Heating
Edition 08/2019 29137454/EN

SEW-EURODRIVE—Driving the world

Table of contents
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7 3
Table of contents
1 Important information .............................................................................................................. 4
2 Structure.................................................................................................................................... 5
2.1 Operating principle..........................................................................................................5
2.2 External thermostat.........................................................................................................6
2.3 Integrated thermostat......................................................................................................6
3 Thermostat ................................................................................................................................ 7
3.1 External thermostat.........................................................................................................7
3.2 Integrated thermostat......................................................................................................7
4 Thermostat – electrical connection ........................................................................................ 9
5 Startup/operation.................................................................................................................... 10
5.1 Positioning the thermostat ............................................................................................10
6 Technical data......................................................................................................................... 12
6.1 A: C/Th/RE/3/G 1 1/2 screw-in heater ..........................................................................12
6.2 B: C/RE/3/G1 1/2 screw-in heater.................................................................................13
6.3 C: C/RE/4/G2 screw-in heater ......................................................................................14
6.4 Thermostat....................................................................................................................15
29137454/EN – 08/2019

1Important information
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7
4
1 Important information
INFORMATION
This information complements the "SPIROPLAN® W Gear Units, R..7, F..7, K..7, K..9,
S..7 Series" operating instructions.
A requirement of fault-free operation and fulfillment of any rights to claim under guar-
antee is that you adhere to the information in the operating instructions.
WARNING
Danger of electric shock.
Severe or fatal injuries.
• De-energize the oil heater before you start working on the unit.
• Secure the oil heater against unintended power-up.
CAUTION
Improper installation of the oil heater may result in damage to the gear unit.
Possible damage to property.
• Make sure that all the heating elements are fully immersed in the oil bath in order
to avoid any damage.
CAUTION
The voltage at the heater and the thermostat must not exceed 230V.
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2
Structure
Operating principle
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7 5
2 Structure
An oil heater is required to allow for a smooth start-up in the event of a cold start at
low ambient temperatures. The oil heater is available with an external or an integrated
thermostat depending on the gear unit design.
However, a gear unit heater is only possible for mounting positions where the thermo-
stat and the screw-in heater are sufficiently covered with oil. This is why the position of
the heater and the thermostat varies depending on the type and the mounting position
of the gear unit. The following table shows for which mounting positions you can use a
gear unit heater:
Gear unit
type
Mounting position
M1 M2 M3 M4 M5 M6
R.. – – X X – –
F.. X X – – X X
K.. X – X1) X X2) X2)
1) possible as of size K..97
2) possible as of size K..167
Depending on the type and size of the gear unit, the gear unit heater can be equipped
with an external or an integrated thermostat:
Gear unit
type
Gear unit size
77 87 97 107 127 137 147 157 167 187
R.. I I I I – E E – E –
F.. I I E E E – – E – –
K.. I I E E E – – E E E
I Heater with integrated thermostat
E Heater with external thermostat
– Size not available
2.1 Operating principle
The heater is screwed into the gear unit housing and is controlled via a thermostat.
The trip temperature of the heater is set depending on the respective lubricant.
The thermostat built in via a special cover has an adjustable temperature range in
which the oil is heated. The temperature range is preset by SEW‑EURODRIVE and
can be changed manually by the customer.
In order to prevent the oil from burning, the heating elements of the heater have a ma-
ximum surface load. This is why the heating process for cold gear unit oil can take
between one and several hours. The duration of the heating process before the start
depends on the following factors:
• Gear unit size
• Mounting position
• Oil quantity
• Ambient temperature
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2Structure
External thermostat
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7
6
The thermostat has to be energized continuously, even if the drive is at a brief stand-
still. If the drive is at standstill over a longer period, for example during holidays, and
the thermostat is not energized, you have to make sure that the thermostat is ener-
gized in due time before the drive is started up.
2.2 External thermostat
The following figure shows a gear unit with heater and external thermostat:
[1]
[2]
2060553483
[1] Thermostat
[2] Heater
2.3 Integrated thermostat
The following figure shows the gear unit with integrated thermostat:
[1]
[2]
2060555403
[1] Thermostat
[2] Heater
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3
Thermostat
External thermostat
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7 7
3 Thermostat
3.1 External thermostat
Depending on the lubricant, the ATHs-SW-2-JUM thermostat with part number
13253972 is preset by SEW-EURODRIVE to one of the two temperature values:
Lubricant Temperature value
CLP HC 220 0 °C
CLP HC 150 -5°C
CLP HC 68 -10°C
CLP HC 32 -15°C
The following figure shows the possible setting range of the thermostat. In this ex-
ample, the pointer is on 0°C.
100
-20
0
20
40
60
80
2060551563
3.2 Integrated thermostat
The C/Th/RE/3/G1½ heater is equipped with an integrated thermostat:
[1]
2060541963
[1] Heater
The temperature value is preset by the supplier. Irrespective of the lubricant, the value
is 10°C.
29137454/EN – 08/2019

3Thermostat
Integrated thermostat
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7
8
The following table shows the integrated screw-in heaters:
Gear unit type Screw-in heater
Heater Thread Con-
nection
voltage
Connec-
tion
type
Power
W
Cable
gland
Wiring
diagram
R77 F77 K77 C/Th/RE/3/G 1 1/2 G1 1/2
AC230
V
or
AC
115V/
120V
Series
connec-
tion
180
Pg 16
A
(→212)
R87 F87 K87
R97 – – C/Th/RE/3/G 1 1/2 G1 1/2 270
R107
R137 F97 K97 C/RE/3/G1 1/2 G1 1/2 320
B
(→213)
- F107 K107 C/RE/3/G1 1/2 G1 1/2 400
R147 F127 K127 C/RE/3/G1 1/2 G1 1/2 520
R167 F157 K157 C/RE/3/G1 1/2 G1 1/2 700
– –
K167 C/RE/4/G2 G2 Parallel
connec-
tion
1000 C
(→214)
K187 C/RE/4/G2 G2 1300
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4
Thermostat – electrical connection
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7 9
4 Thermostat – electrical connection
Proceed as follows to connect the thermostat:
1. Connect the thermostat to the terminals [1], [2] and [4] according to the following
wiring diagram:
>
1
2 4
ϑ
18014398960475019
2. Connect the protective earth conductor to the "PE" terminal.
INFORMATION
Observe the manufacturer's safety instructions.
29137454/EN – 08/2019

5Startup/operation
Positioning the thermostat
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7
10
5 Startup/operation
The gear unit heater comes equipped with cable glands and jumpers. These are in-
cluded in the delivery of the screw-in heaters and are already preassembled. The gear
unit heater is connected to the current supply via terminal studs. They do not depend
on the size of the heater and always have an M4 thread. We recommend using RKS4
ring cable lugs with small grommets.
CAUTION
Malfunction of the gear unit heater due to change of the mounting position.
Possible damage to property.
• Do not change the mounting position without prior consultation with
SEW‑EURODRIVE, otherwise proper functioning of the gear unit heater is no
longer ensured.
Notes on the function of the oil heater
• The thermostat is preset to the temperature specified in chapter "Thermo-
stat"(→27). The thermostat turns off the oil heater at this temperature. The ther-
mostat activates the oil heater again once the temperature is about 3K below the
limit temperature. The gear unit may only be taken into operation when the tem-
peratures set in the thermostat have been reached or when the gear unit oil has
been heated by the oil heater for at least 3hours. Contact SEW-EURODRIVE for
detailed project planning.
• Thermostat and oil heater are installed in the gear unit and are ready for operation.
Before taking the thermostat and oil heater into operation, wire and connect them
to the power supply.
• Contact SEW‑EURODRIVE if a differing oil viscosity class is used or if ambient
temperatures fall below the specified limit temperature.
5.1 Positioning the thermostat
Depending on the installation situation of the drive, it might be necessary to change
the position of the thermostat.
Proceed as follows to position the thermostat:
1. Open the clamping screws [2].
2. Turn the thermostat to the required position.
Observe the position of the cable gland. Mount the cable gland in such a way that
no moisture can enter.
29137454/EN – 08/2019

5
Startup/operation
Positioning the thermostat
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7 11
3. Tighten the clamping screws [2].
[1] [2]
[3] [4]
2338432139
[1] Threaded jacket [3] Thermostat
[2] Clamping screw [4] Cable gland
A protective sleeve prevents oil from leaking. The sensor of the thermostat is inserted
in the protective sleeve and attached via the 2 clamping screws.
29137454/EN – 08/2019

6Technical data
A: C/Th/RE/3/G 1 1/2 screw-in heater
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7
12
6 Technical data
6.1 A: C/Th/RE/3/G 1 1/2 screw-in heater
6.1.1 Connection diagram
AC voltage, single-phase, AC 230 V, series connection (view of the connection sur-
face)
N
PE
L1
[1]
11 14 12
[2]
2060547723
[1] Jumpers
[2] Thermostat pipe
6.1.2 Wiring diagram
Observe the electrical characteristics of the control area.
L1 N
11
12
[1]
[2]
2060549643
[1] Thermostat
[2] Heater
29137454/EN – 08/2019

6
Technical data
B: C/RE/3/G1 1/2 screw-in heater
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7 13
6.2 B: C/RE/3/G1 1/2 screw-in heater
6.2.1 Connection pattern
AC voltage, single-phase, AC 230 V, series connection (view of the connection sur-
face)
N
PE
L1
[1]
2060538123
[1] Jumpers
6.2.2 Wiring diagram
Observe the electrical characteristics of the control area.
L1 N
[1]
[2]
2060540043
[1] Thermostat
[2] Heater
29137454/EN – 08/2019

6Technical data
C: C/RE/4/G2 screw-in heater
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7
14
6.3 C: C/RE/4/G2 screw-in heater
6.3.1 Connection pattern
AC voltage, single-phase, AC 230V, parallel connection (view of the connection sur-
face)
N
PE
L1
[1]
2060543883
[1] Jumpers
6.3.2 Wiring diagram
Observe the electrical characteristics of the control area.
L1 N
[1]
[2]
2060545803
[1] Thermostat
[2] Heater
29137454/EN – 08/2019

6
Technical data
Thermostat
Addendum to the Operating Instructions – Gear Unit Series R..7, F..7, K..7 15
6.4 Thermostat
Ambient temperature -40°C to +80°C
Scale range -20°C to +100°C
Maximum switching capa-
city
AC 230V +10%; 10A
DC 230V +10%; 0.25A
Cable entry M20 × 1.5 for cable cross sections 5 to 10mm
Degree of protection IP65 according to EN60529
29137454/EN – 08/2019

SEW-EURODRIVE—Driving the world
SEW-EURODRIVE GmbH & Co KG
Ernst-Blickle-Str. 42
76646 BRUCHSAL
GERMANY
Tel. [phone]
Fax [phone]
[email protected]
www.sew-eurodrive.com